Pre-
before
Peri-
around
Post-
after
A or An
without; no
Ab-
away from
Ad-
towards
Anti-
against
Sub-
below
Super-
above
Dys-
difficult; painful
Hypo-
below normal; decreased
Hyper-
above normal; excessive
Endo-
within; inside
Ecto-
outside
Exo-
outside
Poly-
many
Oligo-
very little
Inter-
between
Intra-
within