a-
[an-]
[ar-]
absence; lack (when attached to a noun)
lacking; without (when attached to an adjective)
ante-
before
pre-
before
pro-
before
anti-
against
de-
from; down from; away
dia-
through
dys-
faulty; difficult; bad; painful (when attached to a noun)
with difficulty; badly (when attached to a verb or an adjective)
ecto-
outside
en-
in
endo-
within
ento-
within
intra-
within
epi-
on; upon; toward
eso-
in; into
eiso-
in; into
eu-
normal; good; well
ex-
out; out of; outside
exo-
out; out of; outside
hyper-
above; excessive; excess of; greater than normal
hypo-
below; under; less than normal; deficiency of
sub-
below; under; less than normal; deficiency of
infra-
below (spatial)
inter-
between