WordNet (r) 3.0 (2006):

come apart
    v 1: become separated into pieces or fragments; "The figurine
         broke"; "The freshly baked loaf fell apart" [syn: break,
         separate, split up, fall apart, come apart]

Moby Thesaurus II by Grady Ward, 1.0:

105 Moby Thesaurus words for "come apart":
   ablate, atomize, be angry, be excitable, bellow, blow a gasket,
   blow up, break, break open, break up, burst, carry away,
   catch fire, catch the infection, cave in, collapse, come off,
   come undone, come unstuck, conk out, consume, corrode, crack,
   crack up, crumble, crumble into dust, decay, decline, decompose,
   degenerate, disintegrate, disjoin, disorganize, dissolve,
   dissolve into chaos, droop, drop, erode, excite easily, explode,
   fade, fail, faint, fall off, fall to pieces, fire up, fission,
   fissure, fizzle out, flag, flame up, flare up, flash up, flip,
   fly apart, fracture, get excited, get loose, give away, give out,
   give way, go downhill, go haywire, go into hysterics, go soft,
   go to pieces, have a tantrum, hit the ceiling, hit the skids,
   languish, lose courage, lose self-control, molder, peel off,
   peg out, peter out, pine, poop out, rage, ramp, rant,
   rant and rave, rave, run a temperature, rupture, seethe, sink,
   slacken, smolder, snap, split, spring a leak, spring apart, start,
   storm, take fire, turn a hair, unravel, untune, waste away, weaken,
   wear away, wear thin, wilt, yield