WordNet (r) 3.0 (2006):

wear off
    v 1: deteriorate through use or stress; "The constant friction
         wore out the cloth" [syn: wear, wear off, wear out,
         wear down, wear thin]
    2: diminish, as by friction; "Erosion wore away the surface"
       [syn: wear away, wear off]

Moby Thesaurus II by Grady Ward, 1.0:

30 Moby Thesaurus words for "wear off":
   ablate, abrade, be all over, be no more, become extinct,
   become void, blow over, die, die away, erode, expire, fray,
   frazzle, fret, go out, have it, have its time, lapse, pass,
   pass away, rub off, run its course, run out, tatter, wear,
   wear away, wear down, wear out, wear ragged, weather