THESAURUS
bombshell
aerial bomb, antipersonnel bomb, astonishment, blockbuster, blow, bomb, carcass, catch, concussion grenade, depth bomb, depth charge, earthshaker, eye-opener, fire bomb, gas grenade, grenade, hand grenade, incendiary bomb, incendiary grenade, infernal machine, joker, kicker, peripeteia, petard, revelation, shock, shocker, staggerer, startler, surprisal, surprise, surprise ending, surprise package, surprise party, switch, tear-gas grenade, thunderbolt, thunderclap, time bomb, wall grenade