A-/an-
Without, not, lack of
Ab-
Away from
Ad-
To, towards, near
Ante-
Before, forward, in front of
Anti-
Against
Auto-
Self
Bi-
Double, two, twice
Brady-
Slow
Circum-
Around
Contra-
Against, opposite
De-
Down, from
Dia-
Across, apart, through
Dis-
Apart, free from
Dys-
Difficult, abnormal
Ecto-
Outer, outside
En-
In,into, within
Endo-
Inner, inside
EPI-
Over, on, upon
Eryth-
Red
Eu-
Normal, good, well, healthy
Ex-
Out, out of, from, away from
Hemi-
Half
Hyper-
Excessive, too much, high
Hypo-
Under, decreased, less than normal