avaunt
Webster's Dictionary (GCIDE)
Avaunt \A*vaunt"\ ([.a]*v[add]nt" or [.a]*v[aum]nt"), 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." [1913 Webster]
Avaunt \A*vaunt"\, v. t. & i.
1.To advance; to move forward; to elevate. [Obs.] --Spenser. [1913 Webster]
2.To depart; to move away. [Obs.] --Coverdale. [1913 Webster]
Avaunt \A*vaunt"\, v. t. & i. [OF. avanter; [`a] (L. ad) + vanter. See Vaunt.] To vaunt; to boast. [Obs.] --Chaucer. [1913 Webster]
Avaunt \A*vaunt"\, n. A vaunt; to boast. [Obs.] --Chaucer. [1913 Webster]