verity (n.)

late 14c., from Anglo-French and Old French verite "truth, sincerity, loyalty" (12c.), from Latin veritatem (nominative veritas) "truth, truthfulness," from verus "true" (from PIE root *were-o- "true, trustworthy"). Modern French vérité, literally "truth," was borrowed into English 1966 as a term for naturalism or realism in film, etc.