n. 25B6; noun you're telling a fib : LIE, untruth, falsehood, made-up story, invention, fabrication, deception, (piece of) fiction; (little) white lie, half-truth; informal tall story/tale, whopper; Brit. informal porky (pie).
truth.
25B6; verb she had bunked off school, fibbing about a sore throat : LIE, tell a fib, tell a lie, invent a story, make up a story; informal kid.