a-, an-
without
ab-
away from
ad-
toward
ambi-
both
ante-
before
anti-
against
auto-
self
bi-
two, twice, double
Brady-
slow
circum-
around
contra-
against
de-
down
dys-
painful, abnormal, difficult, bad
endo-
within, inside
epi-
above, on
eu-
normal, good
ex-, extra-, exo-
outside of
hemi-
half
hyper-
above, excessive, increased
hypo-
below, decreased, insufficient
infra-
beneath
inter-
between, among
intra-
within, during
levo-
to the left