The meaning of Untruthful and additional information.

Untruth(n.) The quality of being untrue; contrariety to truth; want of veracity; also, treachery; faithlessness; disloyalty.

Untruth(n.) That which is untrue; a false assertion; a falsehood; a lie; also, an act of treachery or disloyalty.

Untruthful(a.) Not truthful; unveracious; contrary to the truth or the fact.