1. the tendency to be untruthful
The Collaborative International Dictionary of English v.0.48:
Mendacity \Men*dac"i*ty\, n.; pl. Mendacities. [L.
1. The quality or state of being mendacious; a habit of
2. A falsehood; a lie. --Sir T. Browne.
Syn: Lying; deceit; untruth; falsehood.
Moby Thesaurus II by Grady Ward, 1.0:
49 Moby Thesaurus words for "mendacity":
blague, boggling, caviling, cock-and-bull story, credibility gap,
dishonesty, dodging, equivocation, exaggeration, fairy tale,
falsehood, falsity, farfetched story, farrago, fib, fibbery,
fibbing, fiction, fish story, flam, flimflam, ghost story,
half-truth, hedging, legal fiction, lie, little white lie, lying,
mendaciousness, mythomania, pious fiction, prevarication,
pseudology, quibbling, shifting, sidestepping, slight stretching,
story, tale, tall story, tall tale, taradiddle, trumped-up story,
truthlessness, untruth, untruthfulness, unveraciousness, white lie,