Mega Root Words 500 (minus 10)

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Handy set of 490 root words, prefixes and suffixes, with examples. Good for GMAT, GRE, SAT study.

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

to, toward, near, in addition to, by.
* accompany, adjust, affix, aggression, allocate, annihilate, aside, attend

a-, an-

not, without.
* apolitical, atheist, anarchy, anonymous, apathy, aphasia, anemia

ab, abs

away from, off.
* absolve, abrupt, absent

-able, -ible

{adj}: worth, ability.
* solvable, incredible

acer, acid, acri

bitter, sour, sharp.
* acerbic, acidity, acrid, acrimony

act, ag

do, act, drive.
* active, react, agent, active, agitate

ac, acu

sharp.
* acute, acupuncture, accurate

-acy, -cy {n}

{n}: state or quality.
* privacy, infancy, adequacy, intimacy, supremacy

-ade

act, product, sweet drink.
* blockade, lemonade

aer, aero

air, atmosphere, aviation.
* aerial, aerosol, aerodrome, aerospace

ag, agi, ig, act

do, move, go.
* agent, agenda, agitate, navigate, ambiguous, action

-age

{n}: activity, or result of action.
* courage, suffrage, shrinkage, tonnage

agri, agro

pertaining to fields or soil.
* agriculture

-al {n}

{n}: action, result of action.
* referral, disavowal, disposal, festival

-al, -ial, -ical {v}

{adj}: quality, relation.
* structural, territorial, categorical

alb, albo

white, without pigment.
* albino, albumin

ali, allo, alter

other.
* alias, alibi, alien, alloy, alter, altruism

alt

high, deep.
* alternate, altimeter, altitude

am, ami, amor

love, like, liking.
* amorous, amiable, amicable, enamored

ambi-

both.
* ambivalent, ambiguous, ambidextrous, amphibious

ambul

to walk.
* ambulatory, amble, ambulance, somnambulist

-an

{n}: person.
* artisan, guardian, historian, magician

ana, ano

up, back, again, anew.
* anode, anagram, anagenetic

-ance, -ence

{n}: action, state, quality or process.
* resistance, independence, extravagance, fraudulence

-ancy, -ency

{n}: state, quality or capacity.
* vacancy, agency, truancy, latency

andr, andro

male, characteristics of men.
* androcentric, android

ang

angular.
* angle, angularity

anim

mind, life, spirit, anger.
* animal, animate, animosity

ann, annu, enni

yearly.
* annual, anniversary, biennial, perrenial, septennial, sesquicentennial

-ant, -ent

{n}: an agent, something that performs the action.
* disinfectant, dependent, fragrant

-ant, -ent, -ient

{adj}: 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, 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

{adj}: resembling, related to.
* spectacular, unitary

arch

chief, first, rule.
* archangel, architect, archaic, monarchy, matriarchy, Archeozoic era

-ard, -art

{n}: characterized.
* braggart, drunkard, wizard

aster-, astr-, astro-

star, star-shaped.
* aster, asterisk, asteroid, astronomy, astronaut

-ate {n}

{n}: state, office, fuction.
* candidate, electorate, delegate

-ate {v}

{v}: cause to be.
* graduate, ameliorate, amputate

-ate {adj}

{adj}: kind of state.
* inviolate

-ation

{n}: 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, auditorium, auricular, auscultate

aug, auc

increase.
* augur, augment, auction

aut, auto

self.
* automatic, automotive, autograph, autonomous, autoimmune

avi-

bird.
* aviation

axi-

axis.
* axisymmetry

axio-

merit.
* axiology

bar

weight, pressure.
* barometer, baroreceptor

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, biometric, biome, biosphere

brev

short.
* abbreviate, brevity, brief

burs

money, finance.
* bursar, bursary, disburse

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

to take, to seize, to hold.
* accident, deceive, capacious, except, intercept, forceps, occasion, reciprocate

cad, cas

to fall.
* accident, cadaver, cadence, cascade, occasional

-cade

procession.
* motorcade

calor

heat.
* calorie, caloric, calorimeter

camp

field.
* campaign, champion

capit, capt

head.
* decapitate, capital, captain, caption

caps-

box, case.
* capsule, encapsulate

carcer-

jail.
* incarcinate

carn

flesh.
* carnivorous, incarnate, reincarnation, carnal

cat, cata, cath

down, with.
* catalogue, catastrophe, 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.
* ancestry, exceed, proceed, precede, recede, secession, succeed

cent

hundred.
* bicentennial, centennial, century, centipede, percent

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, circumorbital, circumscribe, circulatory

cit

call, start.
* incite, citation, cite

civ

citizen.
* civic, civil, civilian, civilization

clam, claim

cry out.
* acclaim, clamor, disclaim, exclamation, proclamation, reclamation,

clement-

mild.
* clemency, inclement

clin

lean, bend.
* decline, inclination

clud, clus claus

to close, shut.
* clause, claustrophobia, enclose, exclude, reclusive

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

with, together.
* cohesiveness, cognate, collaborate, convene, compress, confluence, conjoin

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, incredulous, incredible

cresc, cret, crease, cru

rise, grow.
* crescendo, concrete, increase, decrease, accrue

crit

separate, choose.
* critical, criterion, hypocrite

cur, curs

run.
* concurrent, concur, courier, incur, occur, precursor

cura

care.
* curator, curative, manicure

curv-

bent.
* curvature

crypt-

hidden.
* cryptic, cryptography

cub- {n}

{n}: cube.
* cubic, cuboid, cubicle

cub- {v}

{v}: to lean back, to lie down.
* encumber, incubation

cycl, cyclo

wheel, circle, circular.
* bicycle, Cyclops, cyclone, cyclic, unicycle

cyst-

capsule.
* cystic

damn-, -demn-

to inflict loss upon.
* condemn, damnation

de-

from, down, away, to do the opposite, reverse, against.
* detach, deploy, derange, decrease, deodorize, devoid, deflate, degenerate

deb-

owe.
* debit, indebted

dec, deca

ten, ten times.
* decimal, decade, 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

dens-

thick.
* condense, density

derm

skin, covering.
* hypodermic, dermatology, epidermis, taxidermy

di-, dy-

two, twice, double.
* divide, diverge, divulge

dia

through, across, between.
* diameter, diagonal, dialogue, dialect, diagnosis, diatribe

dic, dict, dit

say, speak.
* abdicate, benediction, contradict, dictation, edict, indictment, predict, verdict

dis, dif

not, opposite of, reverse, separate, deprive of, away.
* differ, dismiss, disallow, dissuade, disproportion, disrespect, disarray

dit

give.
* credit, audit

doc, doct, dog

teach, prove.
* docile, doctor, doctrine, document, dogma, indoctrinate

dom-

home.
* domicile, dome

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

du-, dy-

two.
* dual, duotone, dyad

duc, duct

to lead, pull.
* abduction, conductor, deduce, introduction, product, transducer, viaduct

dur, dura

hard, lasting.
* durable, duration, endure, obdurate

dynam

power.
* dynamic, dynamite, dynasty, 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-, es-

eat.
* edible

-ed {v}

{v}: past tense.
* dressed, faded, patted, closed, introduced

-ed {adj}

{adj}: having the quality or characteristics of.
* winged, moneyed, dogged, tiered

ego-

self.
* egocentric, egotistical

em-, empt-

buy.
* exemption, redeem

emul-

striving to equal, rivaling.
* emulation

-en {v}

{v}: to cause to become.
* lengthen, moisten, sharpen

-en {adj}

{adj}: material.
* golden, woolen, silken

en-, em-

put into, make, provide with, surround with.
* enamor, embolden, enslave, emphasis, empower, entangle

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