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.]

Moby Thesaurus II by Grady Ward, 1.0:

71 Moby Thesaurus words for "frazzled":
   ausgespielt, debilitated, done, done up, dowdy, down-at-heel,
   down-at-the-heels, drooping, emptied, enervated, enfeebled,
   exhausted, fagged, faint, fainting, far-gone, fatigued,
   feeling faint, flagging, footsore, frayed, full of holes,
   good and tired, holey, in rags, in shreds, in tatters, jaded,
   laid low, languid, patchy, played out, pooped, ragged, raggedy,
   ratty, ready to drop, run ragged, run-down, sagging, scruffy,
   seedy, shabby, shoddy, shotten, spent, tacky, tattered, tatty,
   tired, tired-winged, toilworn, torn, unrefreshed, unrestored,
   used up, way-weary, wayworn, weak, weakened, wearied, weariful,
   weary, weary-footed, weary-laden, weary-winged, weary-worn,
   wilting, worn, worn-down, worn-out