Eu-
Good, easy, or normal
Dys-
Difficult, painful, or bad
Anti-
Against
Ad-
Towards
Ab-
Away from
An-
Without or no, absence
A-
Without or no, absence
Post-
After
Peri-
Pertaining to the period around
Pre-
before or proceeding
Endo-
Within or inside
Ex- or Exo-
Without, out of, outside, or away from
Ecto-
Outside
Hyper-
Elevated higher, or more than normal
Hypo-
Depressed, lower, or less than normal
Inter-
Between
Intra-
Within
Poly-
Many or excessive
Oligo-
Scant or little
Sub-
Below, under or less
Super- or Supra-
Above, beyond, or excessive
Epi-
Upper
Extra-
Outside
Infra-
Below, beneath