The Collaborative International Dictionary of English v.0.48:

Frazzle \Fraz"zle\, v. t. [imp. & p. p. Frazzled; p. pr. & vb.
   n. Frazzling.] [Cf. G. faseln, and E. fray.]
   To fray; to wear or pull into tatters or tag ends; to tatter;
   -- used literally and figuratively. [Prov. Eng. & U. S.]
   [Webster 1913 Suppl.]

         Her hair was of a reddish gray color, and its frazzled
         and tangled condition suggested that the woman had
         recently passed through a period of extreme excitement.
                                                  --J. C.
                                                  Harris.
   [Webster 1913 Suppl.]