anientise

from The Collaborative International Dictionary of English v.0.48

Anient \An"i*ent\, Anientise \An`i*en"tise\, v. t. [OF.
   anientir, F. an['e]antir.]
   To frustrate; to bring to naught; to annihilate. [Obs.]
   --Chaucer.
   [1913 Webster]