a-
without. away from
ab-
away from, negative, absent
ad-
towards, in the direction
an-
without
ante-
before, in front of
anti-
against
auto-
self
bi-
two
brady-
slow
circum-
around
contra-
against
di-
two
dia-
through, across
dys-
painful, difficult
ec-
out, out from
endo-
within
epi-
upon
ex-
out from
exo-
out
hemi-
half
homo-
same
hydro-
water
hyper-
excessive
hypo-
less than