Hemi-
Half
A-/ an-
Not
Eg. Apnea
Ante-
Before
Anti-
Against
Auto-
Self
Brady-
Slowly
Eg. Bradycardia
Dia-
Through/ complete
Dys-
Painful/ difficult
Poor/ abnormal
Endo-
Within
Exo-
Outside
Hyper-
Excessive
Hypo-
Less than normal
Macro-
Very large
Mega-
Abnormally large
Multi-
Many
Eg. Multicellular
Peri-
Surrounding
Post-
After
Pre-
Before
Pro-
Before/ forward
Re-
Back
Retro-
Behind
Sub-
Below
Tachy-
Rapid
Trans-
Across/ through