FALS'ITY, noun [Latin falsitas.] 1. Contrariety or inconformity to truth; the quality of being false. Probability does not make any alteration, either in the truth or falsity of things. 2. Falsehood; a lie; a false assertion. [This sense is less proper.]
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI