ab

(a, ab)

from, away

abnormal, avert, abduct, abstract

ad

(a, ae, af, ag, al, an, ap, ar, as, at)

to, towards

admire, atract, admit, affix, append

ambi

both

ambidexterous, ambivert, ambivalent

ante

(anti-Greek)

before

antedate, anteroom, antebellum, antecedent, antediluvian

bene

well

benefit, benefactor, benediciton, benevolent

bi

both, double, two

bicycle, biweekly, binoculars, bilateral

circum

around

circumference, circumnavigate, circumspect, circumvent, circumstance

com

(con, col, cor, co)

together, with

compose, copilot, conspire, collect, concord, conduct

contra

against

contradict, controversy, contraband

de

from, down

demote, depresss, depose, demobilize, defer

dis

apart, away

dismiss, distort, dispel, displease

ex, e

out

expel, exmayor, emit, exclude

extra

beyond

extraordinary, extracurricular, extraneous, extrasensory

in

(il, im, ir)

not

incorrect, illegal, immoral, immortal, inactive, irregular

in

(il, im, ir)

French en, em

into

inject, include, illuminate, impose, irradiate, imbibe, empower, encircle

infra

beneath

infrared, infrasonic

inter

between

intercollegiate, interfere, intervene, interval, intercede, interim

intra, intro

within

intramural, intravenous, introspect, introvert, introduce

mal

badly

malformation, malfunction, maladroit, malnutrition, maladjustment

multi

many

multiply, multiform, multilateral, miltitude

ob

(of, op)

against

obstruct, offend, oppose, object, obstacle

per

throughout, completely

pervert, perfect, perceive, perspire, permanent, perspicacity

post

after

postpone, postwar, postscript, posterior, postseason, posthumous, postdate

pre

before

prewar, preview, precede, predict, prefix

pro

forward, for, in favor of

project, progess, propose, proslavery, pro-New Deal

re

back, again

reclaim, revive, revoke, rejuvenate, repel, restore

retro

backwards

retrospective, retroactive, retrorocket, retrogression, retrograde

se

aside

seduce, secede, secrete, segregate

semi

half

semicircle, semifinal semiannual

sub

under

submerge, submarine, subhuman, subscribe

super

above, over

supervise, superman, superior, supercharge, superintendent, superfluous, superficial, super

trans

across, beyond

transoceanic, transmit, transient, transfix, transatlantic, transducer

tri

three

tricycle, triangle, tripod, tristate

uni

one

unicycle, uniform, unity, universe

ultra

beyond, exceedingly

ultramodern, ultraviolet, ultraconservative, ultraliberal, ultramarine

vice

in place of

vice-president, vice-admiral, viceroy, vicarious

quad

four

quart