fizzle
US /ˈfɪz.əl/
UK /ˈfɪz.əl/

1.
make a sizzling or hissing sound
:
•
The firework fizzled out instead of exploding.
•
The soda fizzled as I poured it into the glass.
2.
end or fail in a weak or disappointing way
:
•
The grand plans for the new project fizzled out.
•
Their enthusiasm quickly fizzled when they realized the amount of work involved.