verb (used with object), de·praved, de·prav·ing.
- to make morally bad or evil; vitiate; corrupt.
- Obsolete. to defame.
- to make morally bad; corrupt; vitiate
- obsolete to defame; slander
late 14c., “corrupt, lead astray, pervert,” from Old French depraver (14c.) or directly from Latin depravare “distort, disfigure;” figuratively “to pervert, seduce, corrupt,” from de- “completely” (see de-) + pravus “crooked.” Related: Depraved; depraving.