Search Result for "perfidy": 
Wordnet 3.0

NOUN (2)

1. betrayal of a trust;
[syn: perfidy, perfidiousness, treachery]

2. an act of deliberate betrayal;
[syn: treachery, betrayal, treason, perfidy]


The Collaborative International Dictionary of English v.0.48:

Perfidy \Per"fi*dy\ (p[~e]r"f[i^]*d[y^]), n.; pl. Perfidies (p[~e]r"f[i^]*d[i^]z). [L. perfidia, fr. L. perfidus faithless; per (cf. Skr. par[=a] away) + fides faith: cf. F. perfidie. See Faith.] The act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery. [1913 Webster] The ambition and perfidy of tyrants. --Macaulay. [1913 Webster] His perfidy to this sacred engagement. --DeQuincey. [1913 Webster]
WordNet (r) 3.0 (2006):

perfidy n 1: betrayal of a trust [syn: perfidy, perfidiousness, treachery] 2: an act of deliberate betrayal [syn: treachery, betrayal, treason, perfidy]
Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "perfidy": 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