Prefixes

a-, an-

without or absence of

ab

from or away

ad-

to or toward

ana-

up

ante-

before

anti-

against

append-

to hang something

bi, bin-

two

brady-

slow

contra-

against

di-

two

dis-

to undo; free from

ecto-, exo-, extra

outside

endo-

within

epi-

upon

erythr-

red

glyc-

sweet

hyper-

above

hypo-

below

im-

not

infra-

under; below

inter-

between

intra-

inside

iso-

equal

macro-

large

mal-

bad

meso-

middle

meta

after

micro-

small

mono-

one

multi-

many

mut-

change

neo-

new

para-

beside

patho-

disease

peri-

surroundings

poly-

many

post-

after

pre-

before

pseudo-

false

re-

back

retro-

back or behind

semi-

half

sub-

under or below

super-

over or above

syn-

together or joined

tachy-

fast

tetra-

four

trans-

through, across, beyond

tri-

three

ultra-

beyond; excess

uni-

one