fizzle

Etymology

Attested in English since 1525-35. From earlier fysel (“to fart”). Related to fīsa (“to fart”). Compare with Swedish fisa (“to fart (silently)”). See also feist. It could also come from old Norse: "fise" simply means "blow," like in "blow in the wind." A weather-exposed community in Rogaland, Norway, is called Fister. (In modern language, the verb "fisle" has the same 3 meanings as in English, see below.)

verb

1. To sputter or hiss.
   The soda fizzled for several minutes after it was poured.
   It is the easest thing, sir, to be done, / As plain as fizzling. 1616, Ben Jonson, The Devil Is an Ass
2. (figurative, informal) To decay or die off to nothing; to burn out; to end less successfully than previously hoped.
   The entire project fizzled after the founder quit.
   And so it fizzled to its close with Gary Cahill galloping around as an extra centre-forward, mutinous chants of “you’re not fit to wear the shirt,” from the England followers and Hodgson’s media staff announcing he would not take any questions. 27 June 2016, Daniel Taylor, “England humiliated as Iceland knock them out of Euro 2016”, in The Guardian, London
3. (military, of a nuclear weapon) To fail to generate the expected yield when exploded during testing.
   The shot fizzled, generating only 200 tons rather than the 30 kilotons they were aiming for.

noun

1. A spluttering or hissing sound.
2. (military) Failure of an exploding nuclear bomb to meet its expected yield during testing.
3. An abortive effort; a flop or dud.
4. A state of agitation or worry.