Would Fizzle out Meaning?

Fail, end weakly, especially after a hopeful beginning. For example, The enthusiasm for reform has fizzled out in this state. The word fizzle dates from the early 1500s and meant “to break wind without making noise.”

Is fizzle out an idiom?

to gradually end, often in a disappointing or weak way: They went to different universities and their relationship just fizzled out.

Where does fizzle out come from?

fizzle (v.)

1530s, "to break wind without noise," probably altered from obsolete fist, from Middle English fisten "break wind" (see feisty) + frequentative suffix -le.