untruth, n. [falsehood], fiction, fabrication, [lie].
untruthful, a. inveracious, [mendacious], [lying].
untruthfulness, n. [mendacity], inveracity, [falsehood].
untwist, v. [unravel], disentangle, feaze.
unused, a. [unaccustomed], [unfamiliar].
unusual, a. [uncommon], [curious], [rare], [odd], [unique], [extraordinary], [anomalous], [irregular].
unutterable, a. [unspeakable], ineffable.
unvarying, a. invariable, [monotonous], [uniform].
unveil, v. [expose], [uncover], [reveal], disclose.
unviolated, a. inviolate, inviolated, inviolable.