1. An untruth.
1845. Q. Rev., LXXV. 115. This continual repetition of amiable untruisms.
1857. Trollope, Barchester T., vi. No one but a preaching clergyman can revel in platitudes, truisms, and untruisms; and yet receive … the same respectful demeanour.
2. That which is untrue.
1868. Visct. Strangford, Select. (1869), I. 188. This tiresome literary trick of making an appeal … to the genius of Untruism.
