1) Alter 2) Change 3) Corrupt 4) Debase 5) Debauch 6) Demoralise 7) Demoralize 8) French word used in English 9) Make evil 10) Misdirect 11) Modify 12) Pervert 13) Profane 14) Subvert 15) To corrupt 16) To defame 17) To depreciate 18) To make bad or worse 19) To make morally bad or evil 20) To malign 1) Bastardise 2) Bastardize 3) Carnalise 4) Debase 5) Demoralise 6) Demoralize 7) Distort 8) Misdirect 9) Sensualise 10) Suborn 11) Vitiate 
• (n. t.) To speak ill of; to depreciate; to malign; to revile. • (n. t.) To make bad or worse; to vitiate; to corrupt.
1. To speak ill of; to depreciate; to malign; to revile. 'And thou knowest, conscience, I came not to chide Nor deprave thy person with a proud heart.' (Piers Plowman) ... 2. To make bad or worse; to vitiate; to corrupt. 'Whose pride depraves each other better part.' (Spenser) ... Synonym: To corrupt, vitiate, contaminate, pollute. ... Origin: L. D...
De·prave' (de*prāv') transitive verb [ imperfect & past participle Depraved (-prāvd'); present participle & verbal noun Depraving .] [ Latin depravare , depravatum ; de- + pravus crooked, disto...
make morally bad corrupt 
deprave 1. To have a morally bad or corrupting influence on someone. 2. To change for the worse; especially, morally; to corrupt; to pervert.
to make morally bad or evil; vitiate; corrupt. · to defame.
[Intelligent words] corrupt morally or by intemperance or sensuality