Greek Prefixes

a/an

not, without

amphi/ampho

both, two ways

ana/ano

upward, back, against, again

anti

opposed to

apo

away/apart from

di

twice, double

dia

through, across

dicho

in two

dys

difficult, painful

ec/ek/ex

out of, outside

ecto

on the outside

en/em

in, within

endo/ento

within

epi/eph

upon, on

eso

inward, within

eu

well, normal, good

exo

outside of, outward

hemi

half/partly

hyper

above, beyond, excessive

hypo

below, under, deficient

kata/cata/cat

against, down, complete (intensive)

met/meta

after, beyond, change

opistho

behind, backward

pali/palin

again, backward

para

alongside, beyond, opposite, abnormal

peri

around

pro

before, in front of, forward

pros

toward, near, in addition

proso

forward, before

syn,sym

together, with