Best English Root Words List free PDF Download

Root, Prefix or Suffix

Meaning

Examples

a, ac, ad, af, ag, al, an, ap, as, at

to, toward, near, in addition to, by

aside, accompany, adjust, aggression, allocate, annihilate, affix, associate, attend, adverb

a-, an-

not, without

apolitical, atheist, anarchy, anonymous, apathy, aphasia, anemia

ab, abs

away from, off

absolve, abrupt, absent

-able, -ible

Adjective: worth, ability

solvable, incredible

acer, acid, acri

bitter, sour, sharp

acerbic, acidity, acrid, acrimony

act, ag

do, act, drive

active, react, agent, active, agitate

acu

sharp

acute, acupuncture, accurate

-acy, -cy

Noun: state or quality

privacy, infancy, adequacy, intimacy, supremacy

-ade

act, product, sweet drink

blockade, lemonade

aer, aero

air, atmosphere, aviation

aerial, aerosol, aerodrome

ag, agi, ig, act

do, move, go

agent, agenda, agitate, navigate, ambiguous, action

-age

Noun: activity, or result of action

courage, suffrage, shrinkage, tonnage

agri, agro

pertaining to fields or soil

agriculture, agroindustry

-al

Noun: action, result of action

referral, disavowal, disposal, festival

-al, -ial, -ical

Adjective: quality, relation

structural, territorial, categorical

alb, albo

white, without pigment

albino, albite

ali, allo, alter

other

alias, alibi, alien, alloy, alter, alter ego, altruism

alt

high, deep

altimeter, altitude

am, ami, amor

love, like, liking

amorous, amiable, amicable, enamoured

ambi

both

ambidextrous

ambul

to walk

ambulatory, amble, ambulance, somnambulist

-an

Noun: person

artisan, guardian, historian, magician

ana, ano

up, back, again, anew

anode, anagram, anagenetic

-ance, -ence

Noun: action, state, quality or process

resistance, independence, extravagance, fraudulence

-ancy, -ency

Noun: state, quality or capacity

vacancy, agency, truancy, latency

andr, andro

male, characteristics of men

androcentric, android

ang

angular

angle

anim

mind, life, spirit, anger

animal, animate, animosity

ann, annu, enni

yearly

annual, annual, annuity, anniversary, perrenial

-ant, -ent

Noun: an agent, something that performs the action

disinfectant, dependent, fragrant

-ant, -ent, -ient

Adjective: kind of agent, indication

important, dependent, convenient

ante

before

anterior, anteroom, antebellum, antedate, antecedent antediluvian

anthrop

man

anthropology, misanthrope, philanthropy

anti, ant

against, opposite

antisocial, antiseptic, antithesis, antibody, antinomies, antifreeze, antipathy

anti, antico

old

antique, antiquated, antiquity

apo, ap, aph

away from, detached, formed

apology, apocalypse, aphagia

aqu

water

aqueous

-ar, -ary

Adjective: resembling, related to

spectacular, unitary

arch

chief, first, rule

archangel, architect, archaic, monarchy, matriarchy, patriarchy, Archeozoic era

-ard, -art

Noun: characterized

braggart, drunkard, wizard

aster, astr

star

aster, asterisk, asteroid, astronomy, astronaut

-ate

Noun: state, office, fuction

candidate, electorate, delegate

-ate

Verb: cause to be

graduate, ameliorate, amputate, colligate

-ate

Adjective: kind of state

inviolate

-ation

Noun: action, resulting state

specialization, aggravation, alternation

auc, aug, aut

to originate, to increase

augment , author, augment, auction

aud, audi, aur, aus

to hear, listen

audience, audio, audible, auditorium, audiovisual, audition, auricular, ausculate

aug, auc

increase

augur, augment, auction

aut, auto

self

automobile, automatic, automotive, autograph, autonomous, autoimmune

bar

weight, pressure

barometer

be

on, around, over, about, excessively, make, cause, name, affect

berate, bedeck, bespeak, belittle, beleaguer

belli

war

rebellion, belligerent, casus belli, bellicose

bene

good, well, gentle

benefactor, beneficial, benevolent, benediction, beneficiary, benefit

bi, bine

two

biped, bifurcate, biweekly, bivalve, biannual

bibl, bibli, biblio

book

bibliophile, bibliography, Bible

bio, bi

life

biography, biology, biometricsm biome, biosphere

brev

short

abbreviate, brevity, brief

cad, cap, cas, ceiv, cept, capt, cid, cip

to take, to seize, to hold

receive, deceive, capable, capacious, captive, accident, capture, occasion, concept, intercept, forceps, except, reciprocate

cad, cas

to fall

cadaver, cadence, cascade

-cade

procession

motorcade

calor

heat

calorie, caloric, calorimeter

capit, capt

head

decapitate, capital, captain, caption

carn

flesh

carnivorous, incarnate, reincarnation, carnal

cat, cata, cath

down, with

catalogue, category, catheter

caus, caut

burn, heat

caustic, cauldron, cauterize

cause, cuse, cus

cause, motive

because, excuse, accusation

ceas, ced, cede, ceed, cess

to go, to yield, move, go, surrender

succeed, proceed, precede, recede, secession, exceed, succession

cent

hundred

centennial, century, centipede

centr, centri

center

eccentricity, centrifugal, concentric, eccentric

chrom

color

chrome, chromosome, polychrome, chromatic

chron

time

chronology, chronic, chronicle chronometer, anachronism, synchronize

cide, cis, cise

to kill, to cut, cut down

fratricide, homicide, incision, incision, circumcision, scissors

circum

around

circumnavigate, circumflex, circumstance, circumcision, circumference, circumorbital, circumlocution, circumvent, circumscribe, circulatory

cit

call, start

incite, citation, cite

civ

citizen

civic, civil, civilian, civilization

clam, claim

cry out

exclamation, clamor, proclamation, reclamation, acclaim

clin

lean, bend

decline, aclinic, inclination

clud, clus claus

to close, shut

include, exclude, clause, claustrophobia, enclose, exclusive, reclusive, conclude

co, cog, col, coll, con, com, cor

with, together

cohesiveness, cognate, collaborate, convene, commitment, compress, contemporary, converge, compact, confluence, convenient, concatenate, conjoin, combine, correct

cogn, gnos

to know

recognize, cognizant, diagnose, agnostic, incognito, prognosis

com, con

fully

complete, compel, conscious, condense, confess, confirm

contr, contra, counter

against, opposite

contradict, counteract, contravene, contrary, counterspy, contrapuntal

cord, cor, cardi

heart

cordial, concord, discord, courage, encourage

corp

body

corporation, corporal punishment, corpse, corpulent, corpus luteum

cort

correct

escort, cortage

cosm

universe, world

cosmos, microcosm, cosmopolitan, cosmonaut

cour, cur, curr, curs

run, course

occur, excursion, discourse, courier, course

crat, cracy

rule

autocrat, aristocrat, theocracy, technocracy

cre, cresc, cret, crease

grow

create, crescent, accretion, increase

crea

create

creature, recreation, creation

cred

believe

creed, credo, credence, credit, credulous, incredulous, incredible

cresc, cret, crease, cru

rise, grow

crescendo, concrete, increase, decrease, accrue

crit

separate, choose

critical, criterion, hypocrite

cur, curs

run

current, concurrent, concur, incur, recur, occur, courier, precursor, cursive

cura

care

curator, curative, manicure

cycl, cyclo

wheel, circle, circular

Cyclops, unicycle, bicycle, cyclone, cyclic

de-

from, down, away, to do the opposite, reverse, against

detach, deploy, derange, decrease, deodorize, devoid, deflate, degenerate

dec, deca

ten, ten times

decimal, decade, decalogue, decimate, decathlon

dec, dign

suitable

decent decorate dignity

dei, div

God

divinity, divine, deity, divination, deify

dem, demo

people, populace, population

democracy, demography, demagogue, epidemic

dent, dont

tooth

dental, denture, orthodontist, periodontal

derm

skin, covering

hypodermic, dermatology, epidermis, taxidermy

di-, dy-

two, twice, double

divide, diverge, diglycerides

dia

through, across, between

diameter, diagonal, dialogue dialect, dialectic, diagnosis, diachronic

dic, dict, dit

say, speak

dictation, dictionary, dictate, dictator, Dictaphone, edict, predict, verdict, contradict, benediction

dis, dif

not, opposite of, reverse, separate, deprive of, away

dismiss, differ, disallow, disperse, dissuade, divide, disconnect, disproportion, disrespect, distemper, disarray

dit

give

credit, audit

doc, doct

teach, prove

docile, doctor, doctrine, document, dogma, indoctrinate

domin

master, that which is under control

dominate, dominion, predominant, domain

don

give

donate, condone

dorm

sleep

dormant, dormitory

dox

thought, opinion, praise

orthodox, heterodox, paradox, doxology

-drome

run, step

syndrome, aerodrome, velodrome

duc, duct

to lead, pull

produce, abduct, product, transducer, viaduct, aqueduct, induct, deduct, reduce, induce

dura

hard, lasting

durable, duration, endure

dynam

power

dynamo, dynamic, dynamite, hydrodynamics

dys-

bad, abnormal, difficult, impaired, unfavorable

dysfunctional, dyslexia, dyspathy

e-

not, missing, out, fully, away, computer network related

emit, embed, eternal,ether, erase, email, e-tailer

ec-

out of, outside

echo, eclipse, eclectic, ecesis, ecstasy, exzema

eco-

household, environment, relating to ecology or economy

ecology, economize, ecospheres, ecomanagement

ecto-

outside, external

ectomorph, ectoderm, ectoplasm

-ed

Verb: past tense

dressed, faded, patted, closed, introduced

-ed

Adjective: having the quality or characteristics of

winged, moneyed, dogged, tiered

-en

Verb: to cause to become

lengthen, moisten, sharpen

-en

Adjective: material

golden, woolen, silken

en-, em-

put into, make, provide with, surround with

enamor, embolden, enslave, empower, entangle

-ence, -ency

Noun: action or process, quality or state

reference, emergency, dependence, eminence, latency

end-

inside, within

endorse, endocardial, endergonic, endoskeleton, endoscope, endogenous

epi-

upon, close to, over, after, altered

epicenter, epicarp, epilogue, epigone, epidiorite

equi-

equal

equidistant, equilateral, equilibrium, equinox, equation, equator

-er, -ier

Adjective: comparative

better, brighter, sooner, hotter, happier

-er, -or

Noun: person or thing that does something

flyer, reporter, player, member, fryer, collector, concentrator

-er, -or

Verb: action

ponder, dishonor, clamor

erg

work, effect

energy, erg, allergy, ergometer, ergograph, ergophobia

-ery

collective qualities, art, practice, trade, collection, state, condition

snobbery, bakery, geenery, gallery, slavery

-es, -ies

Noun: plural of most nouns ending in -ch, -s, -sh, -o and -z and some in -f and -y

passes, glasses, ladies, heroes

-es, -ies

Verb: third person singular present indicative of verbs that end in -ch, -s, -sh, – and some in -y

blesses, hushes, fizzes, defies

-ess

female

actress, goddess, poetess

-est, -iest

Adjective or Adverb: superlative

latest, strongest, luckiest, lyingest

ev-, et-

time, age

medieval, eternal

ex-

out of, away from, lacking, former

exit, exhale, exclusive, exceed, explosion, ex-mayor

exter-, extra-, extro-

outside of, beyond

external, extrinsic, extraordinary, extrapolate, extraneous, extrovert

fa, fess

speak

fable, fabulous, fame, famous, confess, profess

fac, fact, fec, fect, fic, fas, fea

do, make

difficult, fashion, feasible, feature, factory, fact, effect, manufacture, amplification, confection

fall, fals

deceive

fallacy, falsify, fallacious

femto

quadrillionth

femtosecond

fer

bear, carry

ferry, coniferous, fertile, defer, infer, refer, transfer

fic, feign, fain, fit, feat

shape, make, fashion

fiction, faint, feign

fid

belief, faith

confide, diffident, fidelity

fid, fide, feder

faith, trust

confidante, fidelity, confident, infidelity, infidel, federal, confederacy, semper fi

fig

shape, form

figurem, effigy, figure, figment

fila, fili

thread

filigree, filament, filter, filet, filibuster

fin

end, ended, finished

final, finite, finish, confine, fine, refine, define, finale

fix

repair, attach

fix, fixation, fixture, affix, prefix, suffix

flex, flect

bend

flex, reflex, flexible, flexor, inflexibility, reflect, deflect,circumflex

flict

strike

affliction, conflict, inflict

flu, fluc, fluv, flux

flow

influence, fluid, flue, flush, fluently, fluctuate, reflux, influx

-fold

Adverb: in a manner of, marked by

fourfold

for, fore

before

forecast, fortune, foresee

forc, fort

strength, strong

effort, fort, forte, fortifiable, fortify, forte, fortitude

form

shape, resemble

form, format, conform, formulate, perform, formal, formula

fract, frag, frai

break

fracture, infraction, fragile, fraction, refract, frail

fuge

flee

subterfuge, refuge, centrifuge

-ful

Noun: an amount or quanity that fills

mouthful

-ful

Adjective: having, giving, marked by

fanciful

fuse

pour

confuse, transfuse

-fy

make, form into

falsify, dandify

gam

marriage

bigamy, monogamy, polygamy

gastr, gastro

stomach

gastric, gastronomic, gastritis, gastropod

gen

kind

generous

gen

birth, race, produce

genesis, genetics, eugenics, genealogy, generate, genetic, antigen, pathogen

geo

earth

geometry, geography, geocentric, geology

germ

vital part

germination, germ, germane

gest

carry, bear

congest, gestation

giga

billion

gigabyte, gigaflop

gin

careful

gingerly

gloss, glot

tongue

glossary, polyglot, epiglottis

glu, glo

lump, bond, glue

glue, agglutinate, conglomerate

gor

to gather, to bring together

category, categorize

grad, gress, gree

to gather, to bring together, step, go

grade, degree, progress, gradual, graduate, egress

graph, gram, graf

write, written, draw

graph, graphic, autograph, photography, graphite, telegram, polygraph, grammar, biography, lithograph, graphic

grat

pleasing

congratulate, gratuity, grateful, ingrate

grav

heavy, weighty

grave, gravity, aggravate, gravitate

greg

herd

gregarious, congregation, segregate, gregarian

hale, heal

make whole, sound

inhale, exhale, heal, healthy, healthiness

helio

sun

heliograph, heliotrope, heliocentric

hema, hemo

blood

hemorrhage, hemoglobin, hemophilia, hemostat

her, here, hes

stick

adhere, cohere, cohesion, inherent, hereditary, hesitate

hetero

other, different

heterodox, heterogeneous, heterosexual, heterodyne

hex, ses, sex

six

hexagon, hexameter, sestet, sextuplets

homo

same

homogenize, homosexual, homonym, homophone

hum, human

earth, ground, man

humus, exhume, humane

hydr, hydra, hydro

water

dehydrate, hydrant, hydraulic, hydraulics, hydrogen, hydrophobia

hyper

over, above

hyperactive, hypertensive, hyperbolic, hypersensitive, hyperventilate, hyperkinetic

hypn

sleep

hypnosis, hypnotherapy

-ia

Noun: names, diseases

phobia

-ian, an

Noun: related to, one that is

pedestrian, human

-iatry

Noun: art of healing

psychiatry

-ic

Adjective: quality, relation

generic

-ic, ics

Noun: related to the arts and sciences

arithmetic, economics

-ice

Noun: act

malice

-ify

Verb: cause

specify

ignis

fire

ignite, igneous, ignition

-ile

Adjective: having the qualities of

projectile

in, im

into, on, near, towards

instead, import

in, im, il, ir

not

illegible, irresolute, inaction, inviolate, innocuous, intractable, innocent, impregnable, impossible, imposter

infra

beneath

infrared, infrastructure

-ing

Noun: material made for, activity, result of an activity

flooring, swimming, building

-ing

Verb: present participle

depicting

-ing

Adjective: activity

cohering

inter

between, among

international, intercept, interject, intermission, internal, intermittent,

intra

within, during, between layers, underneath

intramural, intranet, intranatal

intro

into, within, inward

interoffice, introvert, introspection, introduce

-ion

Noun: condition or action

abduction

-ish

Adjective: having the character of

newish

-ism

Noun: doctrine, belief, action or conduct

formalism

-ist

Noun: person or member

podiatrist

-ite

Noun: state or quality

graphite

-ity, ty

Noun: state or quality

lucidity, novelty

-ive

Noun: condition

native

-ive, -ative, -itive

Adjective: having the quality of

festive, cooperative, sensitive

-ize

Verb: cause

fantasize

jac, ject

throw

reject, eject, project, trajectory, interject, dejected, inject, ejaculate, adjacent

join, junct

join

adjoining, enjoin, juncture, conjunction, injunction, conjunction

judice

judge

prejudice

jug, junct, just

to join

junction, adjust, conjugal

juven

young

juvenile, rejuvenate

labor

work

laborious, belabor

lau, lav, lot, lut

wash

launder, lavatory, lotion, ablution, dilute

lect, leg, lig

choose, gather, select, read

collect, legible, eligible

leg

law

legal, legislate, legislature, legitimize

-less

Adjective: without, missing

motiveless

levi

light

alleviate, levitate, levity

lex, leag, leg

law

legal, college, league

liber, liver

free

liberty, liberal, liberalize, deliverance

lide

strike

collide, nuclide

liter

letters

literary, literature, literal, alliteration, obliterate

loc, loco

place, area

location, locally, locality, allocate, locomotion

log, logo, ology

word, study, say, speech, reason, study

catalog, prologue, dialogue, zoology, logo

loqu, locut

talk, speak

eloquent, loquacious, colloquial, circumlocution

luc, lum, lun, lus, lust

light

translucent, luminary, luster, luna, illuminate, illustrate

lude

play

prelude

-ly

Adverb: in the manner of

fluently

macr-, macer

lean

emaciated, meager

magn

great

magnify, magnificent, magnanimous, magnate, magnitude, magnum

main

strength, foremost

mainstream, mainsail, domain, remain

mal

bad, badly

malformation, maladjusted, dismal, malady, malcontent,malfunction, malfeasance, maleficent

man, manu

hand, make, do

manual, manage, manufacture, manacle, manicure, manifest, maneuver, emancipate, management

mand

command

mandatory, remand, mandate

mania

madness

mania, maniac, kleptomania, pyromania

mar, mari, mer

sea, pool

marine, marsh, maritime, mermaid

matri

mother

matrimony, maternal, matriarchate, matron

medi

half, middle, between, halfway

mediate, medieval, Mediterranean, mediocre, medium

mega

great, million

megaphone, megaton, megaflop, megalomaniac, megabyte, megalopolis

mem

recall, remember

memo, commemoration, memento, memoir, memorable

ment

mind

mental, mention

-ment

Noun: condition or result

document

meso

middle

mesomorph, mesoamerica, mesosphere

meta

beyond, change

metaphor, metamorphosis, metabolism, metahistorical, metainformation

meter

measure

meter, voltammeter, barometer, thermometer

metr

admeasure, apportion

metrics, asymmetric, parametric, telemetry

micro

small, millionth

microscope, microfilm, microcard, microwave, micrometer, microvolt

migra

wander

migrate, emigrant, immigrate

mill, kilo

thousand

millennium, kilobyte, kiloton

milli

thousandth

millisecond, milligram, millivolt

min

little, small

minute, minor, minuscule

mis

wrong, bad, badly

misconduct, misinform, misinterpret, mispronounce, misnomer, mistake, misogynist

mit, miss

send

emit, remit, submit, admit, commit, permit, transmit, omit, intermittent, mission, missile

mob, mov, mot

move

motion, remove, mobile, motor

mon

warn, remind

monument, admonition, monitor, premonition

mono

one

monopoly, monotype, monologue, mononucleosis, monorail, monotheist,

mor, mort

mortal, death

mortal, immortal, mortality, mortician, mortuary

morph

shape, form

amorphous, dimorphic, metamorphosis, morphology, polymorphic, morpheme, amorphous

multi

many, much

multifold, multilingual, multiped, multiply, multitude, multipurpose, multinational

nano

billionth

nanosecond, nanobucks

nasc, nat, gnant, nai

to be born

nascent, native, pregnant, naive

nat, nasc

to be from, to spring forth

innate, natal, native, renaissance

neo

new

Neolithic, nuveau riche, neologism, neophyte, neonate

-ness

Noun: state, condition, quality

kindness

neur

nerve

neuritis, neuropathic, neurologist, neural, neurotic

nom

law, order

autonomy, astronomy, gastronomy, economy

nom, nym

name

nominate, synonym

nomen, nomin

name

nomenclature, nominate, ignominious

non

nine

nonagon

non

not

nonferrous, nonsense, nonabrasive, nondescript

nov

new

novel, renovate, novice, nova, innovate

nox, noc

night

nocturnal, equinox, noctilucent

numer

number

numeral, numeration, enumerate, innumerable

numisma

coin

numismatics

ob, oc, of, op

toward, against, in the way

oppose, occur, offer, obtain

oct

eight

octopus, octagon, octogenarian, octave

oligo

few, little

Oligocene, oligosaccharide, oligotrophic, oligarchy

omni

all, every

omnipotent, omniscient, omnipresent, omnivorous

onym

name

anonymous, pseudonym, antonym, synonym

oper

work

operate, cooperate, opus

-or

Noun: condition or activity

valor, honor, humor, minor

ortho

straight, correct

orthodox, orthodontist, orthopedic, unorthodox

-ory

Noun: place for, serves for

territory, rectory

-ous, -eous, -ose, -ious

Adjective: having the quality of, relating to

adventurous, courageous, verbose, fractious

over

excessive, above

overwork, overall, overwork

pac

peace

pacifist, pacify, pacific ocean

pair, pare

arrange, assemblage, two

repair, impair, compare, prepare

paleo

old

Paleozoic, Paleolithic, paleomagnetism, paleopsychology

pan

all

Pan-American, pan-African, panacea, pandemonium (place of all the demons),

para

beside

paradox, paraprofessional, paramedic, paraphrase, parachute

pat, pass, path

feel, suffer

patient, passion, sympathy, pathology

pater, patr

father

paternity, patriarch, patriot, patron, patronize

path, pathy

feeling, suffering

pathos, sympathy, antipathy, apathy, telepathy

ped, pod

foot

pedal, impede, pedestrian, centipede, tripod, podiatry, antipode, podium

pedo

child

orthopedic, pedagogue, pediatrics

pel, puls

drive, push, urge

compel, dispel, expel, repel, propel, pulse, impulse, pulsate, compulsory, expulsion, repulsive

pend, pens, pond

hang, weigh

pendant, pendulum, suspend, appendage, pensive, append

per

through, intensive

persecute, permit, perspire, perforate, persuade

peri

around

periscope, perimeter, perigee, periodontal

phage

eat

macrophage, bacteriophage

phan, phas, phen, fan, phant, fant

show, make visible

phantom, fantasy

phe

speak

blaspheme, cipher, phenomenon, philosopher

phil

love

philosopher, philanthropy, philharmonic, bibliophile

phlegma

inflammation

phlegm, phlegmatic

phobia, phobos

fear

phobia, claustrophobia, acrophobia, aquaphobia, ergophobia, homophobia

phon

sound

telephone, phonics, phonograph, phonetic, homophone, microphone, symphony, euphonious

phot, photo

light

photograph, photoelectric, photogenic, photosynthesis, photon

pico

trillionth

picofarad, picocurie, picovolt

pict

paint, show, draw

picture, depict

plac, plais

please

placid, placebo, placate, complacent

pli, ply

fold

reply, implicate, ply

plore

cry out, wail

implore, exploration, deploring

plu, plur, plus

more

plural, pluralist, plus

pneuma, pneumon

breath

pneumatic, pneumonia,

pod

foot, feet

podiatry, tripod

poli

city

metropolis, police, politics, Indianapolis, megalopolis, acropolis

poly

many

polytheist, polygon, polygamy, polymorphous

pon, pos, pound

place, put

postpone, component, opponent, proponent, expose, impose, deposit, posture, position, expound, impound

pop

people

population, populous, popular

port

carry

porter, portable, transport, report, export, import, support, transportation

portion

part, share

portion, proportion

post

after, behind

postpone, postdate

pot

power

potential, potentate, impotent

pre, pur

before

precede

prehendere

seize, grasp

apprehend, comprehend, comprehensive, prehensile

prin, prim, prime

first

primacy, prima donna, primitive, primary, primal, primeval, prince, principal

pro

for, foward

propel

proto

first

prototype, protocol, protagonist, protozoan, Proterozoic, protoindustrial

psych

mind, soul

psyche, psychiatry, psychology, psychosis

punct

point, dot

punctual, punctuation, puncture, acupuncture, punctuation

pute

think

dispute, computer

quat, quad

four

quadrangle, quadruplets

quint, penta

five

quintet, quintuplets, pentagon, pentane, pentameter

quip

ship

equip, equipment

quir, quis, quest, quer

seek, ask

query, inquire, exquisite, quest

re

back, again

report, realign, retract, revise, regain

reg, recti

straighten

regiment, regular, rectify, correct, direct, rectangle

retro

backwards

retrorocket, retrospect, retrogression, retroactive

ri, ridi, risi

laughter

deride, ridicule, ridiculous, derision, risible

rog, roga

ask

prerogative, interrogation, derogatory

rupt

break

rupture, interrupt, abrupt, disrupt, ruptible

sacr, sanc, secr

sacred

sacred, sacrosanct, sanction, consecrate, desecrate

salv, salu

safe, healthy

salvation, salvage, salutation

sanct

holy

sanctify, sanctuary, sanction, sanctimonious, sacrosanct

sat, satis

enough

satient, saturate, satisfy

sci, scio, scientia

know

science, conscious, omniscient, cognocienti

scope

see, watch

telescope, microscope, kaleidoscope, periscope, stethoscope

scrib, script

write

scribe, scribble, inscribe, describe, subscribe, prescribe, manuscript

se

apart, move away from

secede

sect, sec

cut

intersect, transect, dissect, secant, section

sed, sess, sid

sit

sediment, session, obsession, possess, preside, president, reside, subside

semi

half, partial

semifinal, semiconscious, semiannual, semimonthly, semicircle

sen, scen

old, grow old

senior, senator, senile, senescence, evanescent

sent, sens

feel, think

sentiment, consent, resent, dissent, sentimental, sense, sensation, sensitive, sensory, dissension

sept

seven

septet, septennial

sequ, secu, sue

follow

sequence, consequence, sequel, subsequent, prosecute, consecutive, second, ensue, pursue

serv

save, serve, keep

servant, service, subservient, servitude, preserve, conserve, reservation, deserve, conservation, observe

-ship

Noun: status, condition

relationship, friendship

sign, signi

sign, mark, seal

signal, signature, design, insignia, significant

simil, simul

like, resembling

similar, assimilate, simulate, simulacrum, simultaneous

sist, sta, stit

stand, withstand, make up

assist, insist, persist, circumstance, stamina, status, state, static, stable, stationary, substitute

soci

to join, companions

sociable, society

sol, solus

alone

solo, soliloquy, solitaire, solitude, solitary, isolate

solv, solu, solut

loosen, explain

solvent, solve, absolve, resolve, soluble, solution, resolution, resolute, dissolute, absolution

somn

sleep

insomnia, somnambulist

soph

wise

sophomore (wise fool), philosophy, sophisticated

spec, spect, spi, spic

look, see

specimen, specific, spectator, spectacle, aspect, speculate, inspect, respect, prospect, retrospective, introspective, expect, conspicuous

sper

render favorable

prosper

sphere

ball, sphere

sphere, stratosphere, hemisphere, spheroid

spir

breath

spirit, conspire, inspire, aspire, expire, perspire, respiration

stand, stant, stab, stat, stan, sti, sta, st, stead

stand

stature, establish, stance

-ster

person

mobster, monster

strain, strict, string, stige

bind, pull, draw tight

stringent, strict, restrict, constrict, restrain, boa constrictor

stru, struct, stroy, stry

build

construe, structure, construct, instruct, obstruct, destruction, destroy, industry, ministry

sub, suc, suf, sup, sur, sus

under, below, from, secretly, instead of

sustain, survive, support, suffice, succeed, submerge, submarine, substandard, subnormal, subvert

sume, sump

take, use, waste

consume, assume, sump, presumption

super, supra

over, above

superior, suprarenal, superscript, supernatural, superimpose, supercede

syn, sym

together, at the same time

sympathy, synthesis, synchronous, syndicate

tact, tang, tag, tig, ting

touch

tactile, contact, intact, intangible, tangible, contagious, contiguous, contingent

tain, ten, tent, tin

hold, keep, have

retain, continue, content, tenacious

tect, teg

cover

detect, protect, tegular, tegument

tele

distance, far, from afar

telephone, telegraph, telegram, telescope, television, telephoto, telecast, telepathy, telepathy

tem, tempo

time

tempo, temporary, extemporaneously, contemporary, pro tem, temporal

ten, tin, tain

hold

tenacious, tenant, tenure, untenable, detention, retentive, content, pertinent, continent, obstinate, contain, abstain, pertain, detain

tend, tent, tens

stretch, strain

tendency, extend, intend, contend, pretend, superintend, tender, extent, tension, pretense

tera

trillion

terabyte, teraflop

term

end, boundary, limit

exterminate, terminal

terr, terra

earth

terrain, terrarium, territory, terrestrial

test

to bear witness

testament, detest, testimony, attest, testify

the, theo

God, a god

monotheism, polytheism, atheism, theology

therm

heat

thermometer, theorem, thermal, thermos bottle, thermostat, hypothermia

thesis, thet

place, put

antithesis, hypothesis, synthesis, epithet

tire

draw, pull

attire, retire, entire

tom

cut

atom (not cutable), appendectomy, tonsillectomy, dichotomy, anatomy

tor, tors, tort

twist

torture, retort, extort, distort, contort, torsion, tortuous, torturous

tox

poison

toxic, intoxicate, antitoxin

tract, tra, trai, treat

drag, draw, pull

attract, tractor, traction, extract, retract, protract, detract, subtract, contract, intractable

trans

across, beyond, change

transform, transoceanic, transmit, transportation, transducer

tri

three

tripod, triangle, trinity, trilateral

trib

pay, bestow

tribute, contribute, attribute, retribution, tributary

tribute

give

contribute, distribute, tributary

turbo

disturb

turbulent, disturb, turbid, turmoil

typ

print

type, prototype, typical, typography, typewriter, typology, typify

ultima

last

ultimate, ultimatum

umber, umbraticum

shadow

umbra, penumbra, (take) umbrage, adumbrate

un

not, against, opposite

unceasing, unequal

uni

one

uniform, unilateral, universal, unity, unanimous, unite, unison, unicorn

-ure

Noun: act, condition, process, function

exposure, conjecture, measure

vac

empty

vacate, vacuum, evacuate, vacation, vacant, vacuous

vade

go

evade, invader

vale, vali, valu

strength, worth

equivalent, valiant, validity, evaluate, value, valor

veh, vect

to carry

vector, vehicle, convection, vehement

ven, vent

come

convene, intervene, venue, convenient, avenue, circumvent, invent, convent, venture, event, advent, prevent

ver, veri

true

very, aver, verdict, verity, verify, verisimilitude

verb, verv

word

verify, veracity, verbalize, verve

vert, vers

turn, change

convert, revert, advertise, versatile, vertigo, invert, reversion, extravert, introvert, diversion, introvert, convertible, reverse, controversy

vi

way

viable, vibrate, vibrant

vic, vicis

change, substitute

vicarious, vicar, vicissitude

vict, vinc

conquer

victor, evict, convict, convince, invincible

vid, vis

see

video, evident, provide, providence, visible, revise, supervise, vista, visit, vision, review, indivisible

viv, vita, vivi

alive, life

revive, survive, vivid, vivacious, vitality, vivisection, vital, vitamins, revitalize

voc, voke

call

vocation, avocation, convocation, invocation, evoke, provoke, revoke, advocate, provocative, vocal

vol

will

malevolent, benevolent, volunteer, volition

volcan

fire

volcano, vulcanize, Vulcan

volv, volt, vol

turn about, roll

revolve, voluble, voluminous, convolution, revolt, evolution

vor

eat greedily

voracious, carnivorous, herbivorous, omnivorous, devour

-ward

Adverb: in a direction or manner

homeward

-wise

Adverb: in the manner of, with regard to

timewise, clockwise, bitwise

with

against

withhold, without, withdraw, forthwith

-y

Noun: state, condition, result of an activity

society, victory

-y

Adjective: marked by, having

hungry, angry, smeary, teary

zo

animal

zoo (zoological garden), zoology, zodiac, protozoan