WordNet (r) 3.0 (2006):

come off
    v 1: come to be detached; "His retina detached and he had to be
         rushed into surgery" [syn: detach, come off, come
         away] [ant: attach]
    2: happen in a particular manner; "how did your talk go over?"
       [syn: go off, come off, go over]
    3: break off (a piece from a whole); "Her tooth chipped" [syn:
       chip, chip off, come off, break away, break off]

Moby Thesaurus II by Grady Ward, 1.0:

83 Moby Thesaurus words for "come off":
   abjure, be blooded, be found, be met with, be realized,
   be successful, befall, betide, break, carry away, catch on, chance,
   click, come, come about, come apart, come down, come to pass,
   come true, come undone, come unstuck, connect, crack up, cut out,
   desist, develop, discontinue, disintegrate, disuse, drop,
   eventuate, fall, fall off, fall out, fall to pieces, farewell,
   fly apart, get loose, give over, give up, give way, go,
   go great guns, go off, go over, go over big, go to pieces,
   go to town, graduate, hap, happen, have done with, leave off,
   let go, make a hit, meet with success, nol-pros, not pursue with,
   occur, pan out, pass, pass off, peel off, prevail, prosper,
   prove out, put behind one, qualify, quit, relinquish, renounce,
   resign, spring apart, start, stop, succeed, take, take place,
   transpire, unravel, waive, work well, work wonders