ex-
out
sub-
under
pre-
before
equi-
equal
re-
do again
in-, im-, un-
into, in, within
OR
not, opposite of
con-, co-
together
auto-
self
pro-
forward
bi-
two
mal-, male-
bad, poor, evil
mono-, uni-
one
non-
not, opposite of
over-
too much, extra
post-
after
semi-
half, partly
trans-
across, over, change
under-
below, beneath
mis-
wrong
ab-
away from
ambi-
both
anti-
against
bene-
good
contra-
against