a-, an-

without, not

apolitical (not political); anaerobic (without oxygen)

ante-

before

antecedent (an element that comes before something); antebellum (before war, particularly the US Civil War)

anti-

against

antibiotic (medicine that works against bacteria); antiwar (against war)

auto-

self

autobiography (biography of oneself); automatic (self-acting)

bi-

two

biannual (occurring every two years); bicultural (being part of two cultures)

co-, col-, com-, con-, cor-

together, with

coincide (happen together); collaborate (work with); commiserate (be unhappy together); congregate (assemble together); correspond (communicate with)

dis-

opposite, not

disagree (not agree); disappear (opposite of appear)

ex-

out, former

exclude (keep out); ex-president (former president)

il-, im-, in-, ir-

not

illegal (not legal); impatient (not patient); incompatible (not compatible); irresponsible (not responsible)

inter-

between

international (between countries)

intra-, intro-

within, inward

intracultural (within one culture); introspective (reflecting, looking within oneself)

intro-

in, into

introduce (bring in)

mis-

wrong, bad

mislead (lead someone in the wrong direction); misuse (use wrongly)

mono-

single, only

monopoly (control by one person or group); monotheism (belief in one God)

non-

not, without

nonverbal (without speech); nontraditional (not traditional)

omni-

all

omniscient (all-knowing); omnivorous (eating all foods)

pan-

all

panacea (cure for all diseases); pantheon (temple of all gods)

poly-

many

polygamy (marriage to more than one person at one time); polyglot (a person who speaks many languages)

post-

after, later

postmodern (after the modern period); postpone (put off till later)

pre-

before

prejudice (judgment before sufficient knowledge); prepare (make something ready)

pro-

forward

proceed (go forward); progress (forward movement)

re-

again

reappear (appear again); redo (do again)

sub-

under

submarine (underwater vessel); subway (underground train)

super-

over, more than, huge

superimpose (place something over another); superpower (huge power)

un-

opposite, not

unimportant (not important)