Synonyms for Fizzle (same or very similar meaning)
WordNet sense 1 (a fricative sound (especially as an expression of disapproval)):
hiss, hissing, sibilation, hushingWordNet sense 2 (a complete failure):
bust, flopWordNet sense 3 (end weakly):
taper off, fizzle out, peter outFrom the ODE community, based on WordNetadd/edit