1. (

• hiss ,
• hissing ,
• hushing ,
• fizzle ,
• sibilation

) a fricative sound (especially as an expression of disapproval); "the performers could not be heard over the hissing of the audience" ;

2. (

• flop ,
• bust ,
• fizzle

) a complete failure; "the play was a dismal flop" ;

1. (

• taper_off ,
• peter_out ,
• fizzle_out ,
• fizzle

) end weakly; "The music just petered out;