untrue

1 not being in agreement with what is true “the sky is purple” is an untrue statement Synonyms of untrue erroneous, inaccurate, incorrect, inexact, invalid, off, unsound, false, untruthful, wrongWords Related to untrue counterfactual; specious, spurious; deceptive, delusive, delusory, distorted, fallacious, fictitious, illusory, misleading; amiss, askew, awry; deceitful, dishonest, fraudulent, lying, mendacious; unconfirmed, unproven, untested; fabricated, invented, made-up, trumped-upNear Antonyms of untrue confirmed, demonstrated, established, proven, tested; faultless, flawless, impeccable, letter-perfect, perfectAntonyms of untrue accurate, correct, errorless, exact, factual, precise, proper, right, sound, true, valid, veracious

2 not true in one's allegiance to someone or something untrue to his country in its time of need Synonyms of untrue disloyal, false, fickle, inconstant, perfidious, recreant, traitorous, treacherous, unfaithful, faithlessWords Related to untrue irresponsible, trustless, undependable, unreliable, untrustworthy; faltering, hesitant, vacillating, wavering; dubious, irresolute, uncertain; apathetic, dispassionate, uninterestedNear Antonyms of untrue 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 of untrue constant, dedicated, devoted, devout, down-the-line, faithful, fast, loyal, staunch (also stanch), steadfast, steady, true