Synonyms of smashup

1 Syllable
jolt, mess, crash, wreck
2 Syllables
shipwreck, cave-in, mishap, splashdown, stackup, total, pile-up, impact, crack-up, stack-up, wrack-up
3 Syllables
rear-ender, appulse, wreckage, collision, debacle, accident, collapse
4 Syllables
sideswipe, fender-bender, ill-fortune