fizzle vs sibilation

fizzle and sibilation both are nouns.

Word	Noun	Adjective	Verb	Adverb
fizzle	Yes	No	Yes	No
sibilation	Yes	No	No	No

As nouns, fizzle and sibilation are synonyms defined as:

fizzle and sibilation: a fricative sound (especially as an expression of disapproval)

Other synonyms of fizzle include hiss, hissing, hushing.

fizzle (noun)	sibilation (noun)
a complete failure	pronunciation with a sibilant (hissing or whistling) sound
a fricative sound (especially as an expression of disapproval)	a fricative sound (especially as an expression of disapproval)

fizzle (verb)	sibilation (verb)
end weakly