untruism means something that is not true; a false statement. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From untrue + -ism.
noun
- Something that is not true; a false statement.“No one but a preaching clergyman can revel in platitudes, truisms, and untruisms, and yet receive, as his undisputed privilege, the same respectful demeanour as though words of impassioned eloquence, or persuasive logic, fell from his lips.”