Bi-
Two
Dys-
Abnormal, bad, difficult, painful
Endo-
In; within
In
In; into not
Intra-
Within; into
Multi-
Many
Nulli-
None
Oxy-
Rapid; sharp; acid
Peri-
Surrounding
Pre-
Before in front of
Primi-
First
Pseudo-
False
Retro-
Behind;back; backward
Uni-
One