perfidy Synonyms

perfidiousness treason treachery betrayal sellout two-timing trickery perjury seditiousness falsity mendacity lying knavery judas infidelity dirty trick dirty pool unfaithfulness insidiousness foul play false-heartedness faithlessness dirty work underhandedness treacherousness bad faith untruthfulness breach of trust high treason traitorousness inconstancy improbity deceitfulness deceit cuckoldry covin corruption chicanery cheating barratry backhandedness artifice apostasy adultery deception disaffection dishonesty hypocrisy guile fraudulence