untruthful

1 not being in agreement with what is true an unintentionally untruthful statement that the candidate later corrected Synonyms erroneous, inaccurate, incorrect, inexact, invalid, off, unsound, untrue, false, wrongRelated Words 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 confirmed, demonstrated, established, proven, tested; faultless, flawless, impeccable, letter-perfect, perfectAntonyms accurate, correct, errorless, exact, factual, precise, proper, right, sound, true, valid, veracious

2 telling or containing lies the political action committee was slammed for spreading untruthful smears about the candidate and his wife Synonyms lying, mendacious, dishonestRelated Words erroneous, fallacious, false, misleading, untrue; double-dealing, hypocrite, hypocritical, insincere, mealymouthed, smooth-tongued, two-faced; perjuriousNear Antonyms candid, open, plainspoken, straightforward; earnest, sincere, true; conscientious, moral, principled, scrupulous; dependable, reliable, trustable, trustworthy, trusty; decent, ethical, honorable, just, respectable, righteous, right-minded, straight, upright, upstanding, virtuousAntonyms honest, truthful, veracious