durstn't

• dursn't, dursen't

From durst +‎ not.

durstn't

1. (archaic, literary) Contraction of durst not.
   • 1954, J.R.R. Tolkien, The Fellowship of the Ring, Chapter XI: A Knife In The Dark

     I durstn't go outside this dell for any money; I felt that something was creeping up the slope.

• daredn't