perfidious
I adjective base, betraying, cheating, conniving, corrupt, deceitful, deceiving, designing, dishonest, dishonorable, disloyal, disobedient, dissembling, double-crossing, double-dealing, faithless, false, falsehearted, fraudulent, guileful, hypocritical, inconstant, insidious, intriguing, knavish, lying, perfidiosus, perfidus, perjured, plotting, scheming, shifty, slippery, sneaking, sneaky, traitorous, treacherous, treasonable, treasonous, tricky, trothless, unconscionable, undependable, unfaithful, unprincipled, unreliable, unscrupulous, untrue, untrustworthy, untruthful, without honor II index bad (offensive), collusive, contemptible, dishonest, disingenuous, disobedient, evasive, faithless, false (disloyal), felonious, fraudulent, insidious, irresponsible, lying, machiavellian, malevolent, mendacious, outrageous, recreant, tortuous (corrupt), undependable, unreliable, unscrupulous, untrue, untrustworthy

Burton's Legal Thesaurus. . 2006

Synonyms:

Look at other dictionaries:

  • Perfidious — Per*fid i*ous (p[ e]r*f[i^]d [i^]*[u^]s; 277), a. [L. perfidious.] 1. Guilty of perfidy; violating good faith or vows; false to trust or confidence reposed; teacherous; faithless; as, a perfidious friend. Shak. [1913 Webster] 2. Involving, or… …   The Collaborative International Dictionary of English

  • perfidious — ► ADJECTIVE literary ▪ deceitful and untrustworthy: a perfidious lover. DERIVATIVES perfidiously adverb perfidiousness noun …   English terms dictionary

  • perfidious — 1590s, from PERFIDY (Cf. perfidy) + OUS (Cf. ous) …   Etymology dictionary

  • perfidious — *faithless, false, disloyal, traitorous, treacherous Analogous words: *mercenary, venal: disaffected, alienated, estranged (see ESTRANGE): deceitful, *dishonest: perjured, forsworn (see PERJURE) …   New Dictionary of Synonyms

  • perfidious — [adj] treacherous betraying, deceitful, deceptive, double crossing*, double dealing*, faithless, false, insidious, misleading, recreant, shifty*, slick*, snake in the grass*, traitorous, two faced*, two timing*, undependable, unfaithful, unloyal …   New thesaurus

  • perfidious — [pər fid′ē əs] adj. [L perfidiosus] characterized by perfidy; treacherous SYN. FAITHLESS perfidiously adv …   English World dictionary

  • perfidious — [[t]pə(r)fɪ̱diəs[/t]] ADJ GRADED: usu ADJ n If you describe someone as perfidious, you mean that they have betrayed someone or cannot be trusted. [LITERARY] Their feet will trample on the dead bodies of their perfidious aggressors. Syn:… …   English dictionary

  • perfidious — perfidiously, adv. perfidiousness, n. /peuhr fid ee euhs/, adj. deliberately faithless; treacherous; deceitful: a perfidious lover. [1590 1600; < L perfidiosus faithless, dishonest. See PERFIDY, OUS] Syn. false, disloyal; unfaithful, traitorous.… …   Universalium

  • perfidious — adjective Of, pertaining to, or representing perfidy; disloyal to what should command ones fidelity or allegiance. They believed him to be with them but his perfidious action nearly lost them the battle. Syn: traitorous, treacherous …   Wiktionary

  • perfidious — per|fid|i|ous [pəˈfıdiəs US pər ] adj literary [Date: 1500 1600; : Latin; Origin: perfidiosus, from perfidia disloyalty , from perfidus disloyal , from per fidem decipere to deceive by trust ] someone who is perfidious is not loyal and cannot be… …   Dictionary of contemporary English

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