GRE Prefixes
 

  a, an
 

  without, not asexual, amoral, anarchy, anhydrous, Anabaptist, anachronism
ab, abs, a
apart, away fromabnormal, abduct, abductor (muscle), abscission .

See ad in Prefixes,

ad
towardadhere, adductor (muscle) . See ab in Prefixessection), adumbrate
agere
actagent, agency, agenda
amphi, ambi
round, both sidesamphitheater, amphibian, ambidextrous, ambivalent
ante
beforeantedate, anteroom, antecedent, anterior
anthro
mananthropology, anthropomorphic
anti
againstantipathy, antitank, anticlimax
aqua
wateraquarium, aqueous
archaios
ancientarcheology, archetype, archaic, archeozoic
archos
leader, first, chiefmonarchy, oligarchy, anarchy, archetype, architect
audio
hearaudiophile, audiometer, auditory
auto
selfautomatic, automaton, auto-immune
bi
twobi-partisan, bisexual, biennial, binary, bicuspid, bivalve
bene
well, favorablebenefit, benevolent, benefactor, beneficent
bible
bookbibliography, Bible, bibliophile
bio
lifebiology, biography, bio-active
caco
Badcacophony
cide
killhomicide, parricide, germicidal, ecocide
circum
aroundcircumference, circumlocution, circumnavigate
constitutus
standconstitution, statute
corpus
bodycorpse, corporeal punishment, corpus callosum
cracy
ruledemocracy, theocrat, technocracy
credo
beliefcredit, (see also roots section)
demos
peopledemocracy, demographic
di
two, doubledimorphism, dicotyledon, diatomic
dia
across, throughdiagonal, dialectic, dialogue, diagnosis
dis
not, apartdisperse, disinherit, disenfranchise, distend
dominus
lorddominant, dominion
dynasthai
be abledynamic, dynamo, dynasty, dynamite
ego
I, selfego, egomaniac, egocentric
epi
upon, overepidermis, epidemic, epigram, epitaph, epithet, epiphyte, epistasis, epinephrine, epiphysis
ex
outexotic, exterior, extraneous, extemporaneous, exophalmic, exogenous, exothermic, exoskeleton
federis 
Leauge or Packfederation, confederate
frater
Brotherfraternize, fraternity, fraternal, fratricide
geo
earthgeology, geography, geocentric, geomancy
graph (see also Roots section)
write, recordgraphic, graphite, graphology,
hetero
mixed, unlikeheterogeneous, heterosexual, heterodox, heterodont, hetero atom, heterocyclic, heterozygous,
homo
same, alikehomogeneous, homogenized, homozygous, homolytic fission, Homo sapiens, homonid, homeostasis
idem
the sameidentity, idiopathic, I, individual
ideo
idea ideology, ideation, ideal
idios
one’s ownidiom, idiosyncrasy, idiopathic
in
inincarcerate, incorporate, inculcate, induction, inductance, indigenous, indicator, inspiratio
in, im
notincredible, ignoble, inglorious, inhospitable, infinite, infinitesimal, immoral
inter
betweeninteract, interstellar, interpret, interstitial
legis (lex)
lawlegal, legislature
lexis
Wordlexicon, lexicography
liber
free, bookliberty, library, liberal
locus
placelocality, local, circumlocution
macro
Largemacroeconomics, macroscopic, macrophage
mania (see;Roots;section also)
obsessionmaniac, Beatlemania
meter (see;Roots;section also)
measuremetronome, speedometer, odometer
Micro
Smallmicroscope, micron, micrometer, microorganism
mittere, mitto (see;Rootssection also)
Sendmission, transmit, remit
mono
one, singlemonocle, monopoly, monogamy, monovalent, monomania, monarchy
mortis
Deathmortician, mortuary, moribund, morbid
nomen
Namenoble, ignominy, nomenclature, nominal
olig
Fewoligarchy, oligopoly
pater
Fatherpaternal, paternity, patricide
ped (see;Roots;section also)
footpedestrian, pedal, pedicure, podiatrist
peri
aroundperipatetic, periscope, perineum, peritoneum
phage (see;Roots;section also)
eatphagocyte, phagocytosis
Philo
Lovephilosophy, philanthropy
polein
selfmonopoly
Polis
Citypolitical, metropolitan
poly (see;Roots;section also)
manypolygamy, polyphonic, hoi polloi
porto
carryporter, export
post
afterpost script (p.s.), ex post facto,;post hoc, post-mortem
Pre
beforepremier, preview, premium, prescient
PRO
before, in favor ofproject, projectile,
psyche
mind, soulpsychology
publicus
peoplepublic, republic, pub, publican
riparia
riverriparian
Scope
examinemicroscope, oscilloscope
scribo;
writetranscribe, scribe, script
solus
alonesolo, solitary
subter
under, secretsubterfuge, subtle, subaltern, subterranean
sin
together, withsynchronize, symphony,;sympathy, syncretic, syncope
tel
distance;telegraph, telephone, teleology
trans
accrosstransport, transcend, transmogrify
utilis
usefulutility, utilitarian
vide, visibil, vis
Seeideo, vision, visible