a-
without, away from
aphasia (without speech)
an-
without
anoxia (without oxygen)
ante-
before, in front of
antepartum (before birth)
anti-
against
antibiotic (against life)
auto-
self
autograft (a graft from one’s own body)
brady-
slow
bradycardia (slow heartbeat)
contra-
against
contraception (against conception)
de-
without
dys-
painful, difficult, abnormal
endo-
within, inner
epi-
upon, over
eso-
inward
eu-
normal, good
ex-
external, outward
exo-
outward
extra-
outside of
hetero-
different
homo-
same
hydro-
water
hyper-
over, above
hypo-
under, below
in-
not, inward
inter-
among, between
intra-
within, inside