Synonyms of explosions

1 Syllable
pop, crack, gust, bang, burst, roar, blast, fit, clap
2 Syllables
report, firing, outbreak, blowup, blowout, access, outburst, salvo
3 Syllables
ignition, backfire, percussion, paroxysm, flare-up, concussion, combustion
4 Syllables
fulmination, detonation