a- or an-
Without or lacking
Ab-
Away from
Ad-
Toward or adjacent to
Anti-
Against or opposed
Arthr-
Joint
Auto-
Self
Bi-
Two
Bio-
Life
Carcin-
Cancer or tumor
Cardio-
Heart
Cephal-
Head
Cerebro-
Brain
Chondr-
Cartilage
Circum-
Around or round about
Co-
With or together
Contra-
Against or opposing
Derm-
Skin
Di-
Two
Dys-
Difficult or abnormal
Ecto-
Outside or external
Endo-
Inside or within
Epi-
Upon or above
Erythro-
Red
Eu-
Well, good, or true