Pronunciation: [fˈɪzə͡ld ˈa͡ʊt] (IPA) 
The word "fizzled out" is spelled as /ˈfɪzl aʊt/ in IPA phonetic transcription. The first syllable is pronounced as "fiz" with a short "i" sound. The second syllable is pronounced as "l" with a short "u" sound. The word means to lose strength or gradually come to an end. It can be used to describe a fire that slowly fades away or a party that quickly loses momentum.
"Fizzled out" is a colloquial phrase used to describe something that ends or concludes in a disappointing or unsatisfactory manner, often after initially showing promise or excitement. The term "fizzled out" derives its meaning from the sound and behavior of a fizzling process, typically associated with the sound of carbonated bubbles slowly losing their effervescence or energy.
In general usage, "fizzled out" refers to a gradual decline or weakening of an event, endeavor, or relationship, resulting in its eventual demise or failure. It can be applied to various contexts, such as a romantic relationship that loses its spark and gradually fades away, or a project or plan that starts with enthusiasm but eventually loses momentum and fails to achieve its intended goals.
The term implies a sense of disappointment or anticlimax, as the initial excitement or hope associated with the situation wanes or dissipates over time. It often conveys a feeling of disillusionment or a loss of enthusiasm, leaving individuals feeling disheartened or let down.
Moreover, "fizzled out" can be used to describe the flaring out of a flame or spark, where the energy is slowly extinguished, leaving only a weak glow or nothing at all. This image can be applied metaphorically to characterize an event or situation that gradually loses its intensity, relevance, or impact, ultimately ending in a lackluster outcome.
The term "fizzled out" originated from the word "fizzle". "Fizzle" comes from the Middle English word "fisilen", which means to break wind silently or to hiss. It likely imitates the sound of an extinguishing flame or fizzling firework. Over time, "fizzle" came to mean the act of gradually losing energy, reach a weak or anticlimactic end, or to fail to meet expectations. The phrase "fizzled out" emerged as a figurative expression to describe something that has lost momentum, enthusiasm, or effectiveness, much like the dissipation of fizz in a drink or the fading of a firework display.
