- The definition of avaunt is to be gone, leave or depart.
An example of avaunt is what a king would say to a servant to dismiss him from the room.
avaunt definition by Webster's New World
Origin: Middle English ; from Old French avant, forward ; from Late Latin abante ; from Classical Latin ab, from plush ante, before
avaunt definition by American Heritage Dictionary
Origin: Middle English, forward, from Old French avant, from Latin abante : ab-, from; see ab-1 + ante, before; see ante-.