perfidiousness Synonyms

perfidy treachery bad faith breach of trust traitorousness dirty trick sellout two-timing trickery treason sedition treacherousness dirty work disloyalties breaking of faith betrayal of trust subversive activity untrustworthiness untrueness unfaithfulness twoness false-heartedness faithlessness stab in back mendacity infidelity dishonesty deception deceitfulness deceit cuckoldry chicanery cheating betrayal artifice apostasy disloyalty duality inconstancy hypocrisy guile fraudulence fraud fickleness falsity falseness falsehood duplicity adultery