Synonyms of supersonic

1 Syllable
prompt, brisk, swift, fleet, fast, pdq
2 Syllables
airbus, ready, quick-fire, fasted, breakneck, headlong, speedy, express, snappy, fastest, swiftest, hasty, rapid, speediest, swifter, hurried, chop-chop, turbo, speedier, faster, nimble, speedball, winged
3 Syllables
rapid-fire, barrelling, double-quick, fleet-footed, summary, fleetfooted, agile, lissome, lively, double-time, screamin'
4 Syllables
hypersonic, alacritous, ultrasonic, immediate, harefooted, expeditious
5 Syllables
precipitate, accelerated