! Exclamation point exclamation (mark), (ex)clam, excl, wow, hey, boing, bang, shout, yell, shriek, pling, factorial, ball-bat, smash, cuss, store, not (UNIX) (C), dammit (UNIX)
Deeply sadened there is not entry for this with "splosh dot", as that and "bang" are the ones everybody I've worked with used over past 3 decades, though mindful that may well be a local cultural thang from the UK.
As for ~ even sadder there is not entry for "swan hyphen".