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 — I adjective base, betraying, cheating, conniving, corrupt, deceitful, deceiving, designing, dishonest, dishonorable, disloyal, disobedient, dissembling, double crossing, double dealing, faithless, false, falsehearted, fraudulent, guileful,… … Law 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 — 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