WordNet (r) 3.0 (2006):

worn out
    adj 1: drained of energy or effectiveness; extremely tired;
           completely exhausted; "the day's shopping left her
           exhausted"; "he went to bed dog-tired"; "was fagged and
           sweaty"; "the trembling of his played out limbs"; "felt
           completely washed-out"; "only worn-out horses and
           cattle"; "you look worn out" [syn: exhausted, dog-
           tired, fagged, fatigued, played out, spent,
           washed-out, worn-out(a), worn out(p)]

Moby Thesaurus II by Grady Ward, 1.0:

96 Moby Thesaurus words for "worn out":
   abandoned, abjured, ablated, all in, antiquated, antique, archaic,
   ausgespielt, beat, beat up, beaten, bone-weary, burned-out,
   burnt up, bushed, consumed, dead, dead-and-alive, dead-tired,
   deadbeat, depleted, deserted, devitalized, disabled, discontinued,
   dissipated, disused, dog-tired, dog-weary, done, done in, done up,
   done with, drained, eaten up, effete, emptied, enervated,
   enfeebled, eroded, eviscerated, exhausted, fagged out, far-gone,
   fatigued, finished, frazzled, gone, impoverished, incapacitated,
   jaded, knocked out, laid low, not worth saving, obsolescent,
   obsolete, old, old-fashioned, on the shelf, out, out of use,
   out-of-date, outdated, outmoded, outworn, past use, pensioned off,
   played out, pooped, pooped out, prostrate, ready to drop,
   relinquished, renounced, resigned, retired, run-down, sapped,
   shotten, spent, superannuate, superannuated, superseded, tired,
   tired out, tired to death, tuckered out, used up, washed-up,
   wasted, weakened, weary unto death, whacked, wiped out, worn,
   worn away