List of perfidy synonyms and perfidy related words.
betrayal, deceit, dirty pool, dirty trick, dirty work, disloyalty, double-dealing, duplicity, faithlessness, falseheartedness, falseness, falsity, foul play, hypocrisy, infidelity, insidiousness, perfidiousness, sellout, traitorousness, treacherousness, treachery, treason, unfaithfulness