Webster’s Revised Unabridged Dictionary · 1913
Avaunt
A·vaunt′ (ȧ·va̤nt′ or ȧ·vänt′), interj. [F. avant forward, fr. L. ab + ante before. Cf. Avant, Advance.] Begone; depart; — a word of contempt or abhorrence, equivalent to the phrase "Get thee gone."
A·vaunt′, v. t. & i. 1. To advance; to move forward; to elevate. [Obs.] Spenser.
2. To depart; to move away. [Obs.] Coverdale.
A·vaunt′, v. t. & i. [OF. avanter; à (L. ad) + vanter. See Vaunt.] To vaunt; to boast. [Obs.] Chaucer.
A·vaunt′, n. A vaunt; to boast. [Obs.] Chaucer.