A-
Without, lack of
Ab-
Away from
Ad-
To, toward
An-
Without, lack of
Ana-
Up, back, again
Ante-
Before, forward
Anti-
Against, opposed to
Auto-
Self
Bi-
Two
Brady-
Slow
Circum-
Around, about
Contra-
Against, opposite
De-
Down from, away
Di-
Twice, double
Dia-
Through, completely
Dys-
Difficult, painful, abnormal
Ect(o)-
Out, outside
End(o)-
Within
Epi-
Upon, over, above
Eu-
Easy, good, normal
Ex(o)-
Outside, away from
Extra-
Outside, in addition
Hemi-
Half
Hyper-
Over, excessive, high