a-, an-
no, not without
ab-
away from
ad-
toward
ana-
up, apart
ante-
forward, before
anti-
against
auto-
self, own
bi-
two
brady-
slow
cata-
down
con-
with, together
contra-
against, opposite
de-
down, lack of
dia-
through, complete
dys-
bad, painful, difficult, abnormal
ec-, ecto-
out, outside
en-, endo-
in, within
epi-
upon, on, above
eu-
good, normal
ex-
out, away from
hemi-
half
hyper-
excessive, above
hypo-
deficient, under
in-
not, into