a- or an-
without
ab-
away from
ad-
to, toward
ante-
before (in front of)
anti-
against
auto-
self
bi-
twice, double
brady-
slow
circum-
around
contra-
opposed, against
co-
with
cyan-
blue
cyst-
bag, bladder, sac
dys-
difficult, painful
ex-
without, away from
extra-
outside of
hemato-
blood
hemi-
half
hydro-
water
hyper-
higher, more
hypo-
lower, less
intra-
within
inter-
between
leuko-
white