Culp
Blame
Culprit, exculpate
Cur/cour
Run (a course)
Incur, discourse
De
Away from/opposite, of
Decline, deny
Dec/deci
Ten
Decade, decimal
Dent
Teeth
Dental, denture
Derm
Skin
Dermatologist, dermatitis
Desc
Down
Descent, descendent
Dext
Ability
Ambidextrous, dexterity
Di
Two, apart, split
Diode, dilute
Dic/dict
Say, tell
Edict, dictionary
Dign/dain
Worth
Dignity, disdain
Dis
Apart from, not
Distant, dissipate
Domi
Rule over
Dominant, domicile
Dorm
Sleep
Dormitory, dormant
Duc/dul
Lead
Duct, conductor