Untruth1. (n.) The quality of being untrue; contrariety to truth; want of veracity; also, treachery; faithlessness; disloyalty.
2. (n.) That which is untrue; a false assertion; a falsehood; a lie; also, an act of treachery or disloyalty.
Thesaurus Entries
aberrancy, aberration, blague, canard, cock-and-bull story, defectiveness, delusion, deviancy, distortion, errancy, erroneousness, error, exaggeration, fairy tale, fallaciousness, fallacy, falsehood, falseness, falsity, farfetched story, farrago, fault, faultiness, fib, fiction, fish story, flam, flaw, flawedness, flimflam, ghost story, half-truth, hamartia, heresy, heterodoxy, illusion, inveracity, legal fiction, lie, little white lie, mendacity, misapplication, misconstruction, misdoing, misfeasance, misinterpretation, misjudgment, misrepresentation, peccancy, perversion, pious fiction, prevarication, self-contradiction, sin, sinfulness, slight stretching, story, tale, tall story, tall tale, taradiddle, trumped-up story, truthlessness, unorthodoxy, untrueness, untruthfulness, white lie, yarn