Wiktionary
n. untruth; falsehood.
Usage examples of "mistruth".
But she had heard him say it, a mistruth so blatant that now she was suspicious.
Baldwin twisted his head upon his neck, fighting the sin of mistruth even as he babbled a thousand lies.
Nevertheless, a wayward glimpse brought unexpected grief, not for the Uncle I knew but the one that I had been cheated of by a boyhood prank gone awry, and all the mistruths and misdeeds it had begat.
That extends to any mistruths, as those would fall under the heading of obstruction of justice and lying in an official investigation.
How many more times would he wound her with his mistruths and abrupt reactions?
It hadn't seemed real before, working out his story back at B'hala, coming to the station and carefully stating his mistruths to the people he cared about Throughout, it had all felt like some fantastic but distant dream.