perfidy Synonyms

perfidiousness betrayal treachery treason seditiousness traitorousness dirty pool dirty trick sellout two-timing trickery mendacity high treason breach of trust untruthfulness unfaithfulness one-upmanship insidiousness foul play false-heartedness faithlessness dirty work underhandedness treacherousness bad faith lying knavery dishonesty disaffection deception deceitfulness deceit covin corruption chicanery cheating artifice disloyalty double dealing duality infidelity inconstancy hypocrisy guile fraudulence fraud falsity falseness falsehood duplicity