奸

Adjectival nouns or quasi-adjectives (keiyodoshi)

cunning and wickedness

cunning and wicked person

evil design; crafty plan; plot

disloyal retainer; treacherous subject

cunning; craft; wiles

villain

shrewd (dirty) trick; sinister scheme (design); sly art

wicked design; vicious plan; plot

cunning; sly

wicked person; evil thing

wiles and cunning; craftiness and treachery

Obsolete term

evil thief; wicked robber

cunning man; crook

someone who curries favor with their master while secretly plotting against him

wickedness

wicked person

killing a villain (with a sword, dagger, etc.)

letter explaining the reasons for cutting down an alleged villain; assassin's written vindication of his killing

treacherous; wicked; perverse

iniquity; wickedness; dishonesty

Chinese traitor (esp. a collaborator with the Japanese)