perfidious
per·fid·i·ous
(pər-fĭd′ē-əs)adj.
Of, relating to, or marked by perfidy; treacherous. See Synonyms at faithless.
per·fid′i·ous·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
perfidious
(pəˈfɪdɪəs)adj
guilty, treacherous, or faithless; deceitful
perˈfidiously adv
perˈfidiousness n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
per•fid•i•ous
(pərˈfɪd i əs)adj.
deliberately faithless; treacherous; deceitful.
[1590–1600; < Latin perfidiōsus faithless, dishonest. See perfidy, -ous]
per•fid′i•ous•ly, adv.
per•fid′i•ous•ness, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
| Adj. | 1. |  perfidious - tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans; "Punic faith"; "the perfidious Judas"; "the fiercest and most treacherous of foes"; "treacherous intrigues"unfaithful - not true to duty or obligation or promises; "an unfaithful lover" |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
perfidious
adjective (Literary) treacherous, dishonest, false, corrupt, unfaithful, two-faced, disloyal, deceitful, faithless, untrustworthy, double-dealing, traitorous, double-faced, treasonous, recreant (archaic) She says that politicians are a perfidious breed.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
perfidious
adjectiveNot true to duty or obligation:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations
perfidious
[pɜːˈfɪdɪəs] ADJ (liter) → pérfido
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
perfidious
[pərˈfɪdiəs] (literary) adj (= treacherous) → perfide
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
perfidious
[pɜːˈfɪdɪəs] adj → perfido/a
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995