Synonyms and Antonyms of perfidious
not true in one's allegiance to someone or something <a perfidious campaign worker revealed the senator's strategy to his leading rival for the nomination> Synonyms disloyal, false, fickle, inconstant, faithless, recreant, traitorous, treacherous, unfaithful, untrueRelated Words irresponsible, trustless, undependable, unreliable, untrustworthy; faltering, hesitant, vacillating, wavering; dubious, irresolute, uncertain; apathetic, dispassionate, uninterestedNear Antonyms dependable, dutiful, reliable, responsible, solid, tried, tried-and-true, trustable, trustworthy, trusty; unfaltering, unhesitating, unwavering; determined, intent, resolute; confirmed, dyed-in-the-wool, inveterate, sworn; ardent, avid, enthusiastic, fervent, fervid, impassioned, passionateAntonyms constant, dedicated, devoted, devout, down-the-line, faithful, fast, loyal, staunch (also stanch), steadfast, steady, true
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