Ambi-
Both
A-
Without
An-
Without
Ante-
Before
Anti-
Against
Bi-
Two or both
Brady-
Slow
Chlor-
Green
Circum-
Around
Cirrh
Yellow
Con-
With
Contra-
Without
Cyan-
Blue
Dia-
Across or through
Dis-
Separate from or apart
Dys
Painful, difficult
Ec-
Away or out
Ecto-
Outside
Endo-
Within
Epi-
Upon
Erthyr-
Red
Eu-
Good or normal
Exo-
Outside
Hemi-
Half