a-, an-
without, not
ab-
away from
ad-
toward, near
ana-
up, apart
ante-
before, forward
anti-
against
auto-
self
bi-
two
brady-
slow
cata-
down
con-
with, together
contra-
against, opposite
de-
down, away from
dia-
through, complete
dys-
bad, painful, difficult
ec-
out, outside
en-, endo-
in, within
epi-
above, upon
eu-
good, normal
ex-
out, away from
hemi-
half
hyper-
above, excessive
hypo-
below, deficient
in-
not, into