Vaunt (vänt or v&asuml_;nt; 277), v. i. [imp. & p. p. Vaunted; p. pr. & vb. n. Vaunting.] [F. vanter, LL. vanitare, fr. L. vanus vain. See Vain.] To boast; to make a vain display of one's own worth, attainments, decorations, or the like; to talk ostentatiously; to brag.
[1913 Webster]

Pride, which prompts a man to vaunt and overvalue what he is, does incline him to disvalue what he has. Gov. of Tongue.
[1913 Webster]

Vaunt, n. A vain display of what one is, or has, or has done; ostentation from vanity; a boast; a brag.
[1913 Webster]

The spirits beneath, whom I seduced
With other promises and other vaunts. Milton.
[1913 Webster]

Vaunt, v. t. [See Avant, Advance.] To put forward; to display. [Obs.] “Vaunted spear.” Spenser.
[1913 Webster]

And what so else his person most may vaunt. Spenser.
[1913 Webster]