n. 25B6; noun
a downright falsehood : LIE, untruth, fib, falsification, fabrication, invention, fiction, story, cock and bull story, flight of fancy; half truth; informal tall story, tall tale, fairy story, fairy tale, whopper; Brit. informal porky (pie); humorous terminological inexactitude.
he accused me of falsehood : LYING, mendacity, untruthfulness, fibbing, fabrication, invention, perjury, telling stories; deceit, deception, pretence, artifice, double-crossing, treachery; poetic/literary perfidy.
truth, honesty.