Fizzle out

What is Fizzle out?

Fizzle out definition and meaning on Dictionary terms:
verb (used without object), fizA.zled, fizA.zling.
to make a hissing or sputtering sound, especially one that dies out weakly.
Informal. to fail ignominiously after a good start (often followed by out): The reform movement fizzled out because of poor leadership.

a fizzling, hissing, or sputtering.
Informal. a failure; fiasco.