Emily Dickinson Lexicon

VAUNT, v. [Fr. venter; It. vantarsi, from vanto, a boasting, from unto, vain, L. vanus. This ought to be written rant.]

To boast; to make a vain display of one's own worth, attainments or decorations; to talk with vain ostentation; to brag. Pride—prompts a man to vaunt and overvalue what he is. Gov. of the Tongue.