An example of avaunt is what a king would say to a servant to dismiss him from the room.
Origin of avauntMiddle English from Old French avant, forward from Late Latin abante from Classical Latin ab, from + ante, before
Origin of avauntMiddle English forward from Old French avant from Latin abante ab- from ; see ab- 1. ante before ; see ante- .
(third-person singular simple present avaunts, present participle avaunting, simple past and past participle avaunted)
1275–1325; Middle English, from Old French avant (“to the front”).