fizzle out

gradually lose energy and end in a weak or disappointing way

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What does "fizzle out" mean?

To fizzle out is to gradually lose energy, momentum, or enthusiasm and come to a weak, underwhelming end — usually when something promised far more than it delivered. The word carries a built-in sense of anticlimax: the thing in question started with real or apparent potential, but instead of finishing strongly, it simply spluttered and died. The onomatopoeic quality of 'fizzle' — evoking the sound of a damp firework failing to ignite — reinforces this image of deflating, disappointing endings. It is widely used in everyday speech and journalism to describe failed campaigns, relationships that petered away, or trends that never quite took hold. Unlike simply stopping or ending, fizzling out always implies that something fell short of expectations.

Examples

How to use it

subject + fizzle out

The most common pattern — fizzle out is always intransitive, so the subject (the thing losing energy) comes before the verb with nothing after it.

The peace negotiations fizzled out before either side could reach an agreement.

subject + fizzle out + after/within + time expression

A time expression is often added to indicate how quickly or slowly the anticlimactic ending arrived.

The new fitness craze fizzled out within a few weeks of its launch.

subject + fizzle out + before + clause

A 'before' clause can be added to highlight what was never achieved, emphasising the disappointment.

The campaign fizzled out before it had managed to attract any significant public support.

subject + have/has fizzled out

The present perfect is particularly common in journalistic writing to describe something whose energy has recently been lost.

Public enthusiasm for the project has fizzled out, and funding is now in doubt.

it + seem/appear + likely/certain + that + subject + will fizzle out

Fizzle out is often used with prediction structures when commentators anticipate an anticlimactic ending.

Many analysts thought it was only a matter of time before the movement fizzled out entirely.

Common Collocations

relationshipcampaignprotestenthusiasmmomentumtalks

Common Mistakes

Using it as a transitive verb

Fizzle out is always intransitive — it never takes a direct object. The subject is always the thing that loses energy, not a person or force causing it to end.

✗ The government fizzled out the protest movement.
✓ The protest movement fizzled out.
Confusing it with 'die out'

'Die out' refers to complete extinction or total disappearance, often over a long period (e.g. a species or a tradition vanishing). 'Fizzle out' is about a gradual, anticlimactic loss of energy or enthusiasm — something that underwhelmed rather than disappeared entirely.

✗ Dinosaurs fizzled out millions of years ago.
✓ Dinosaurs died out millions of years ago. / The initial excitement about the exhibition fizzled out after the first week.
Using the present continuous awkwardly

Because fizzle out describes a gradual process with an implied endpoint, the present continuous ('is fizzling out') can sound awkward or clinical in most contexts. The simple past or present perfect usually sounds more natural.

✗ The enthusiasm is fizzling out right now as we watch.
✓ The enthusiasm has fizzled out. / The enthusiasm fizzled out almost immediately.

Usage

Fizzle out is neutral in register and works well in both spoken English and journalistic writing. It almost always implies that something was expected to succeed or be exciting but ended in a disappointing, anticlimactic way.

Frequently Asked Questions

Does 'fizzle out' always imply something bad or disappointing?

Almost always, yes. The connotation of unfulfilled potential is central to this phrasal verb — it implies that something was expected to succeed or be exciting but ended weakly instead. If something simply came to a natural, expected end, a more neutral phrase like 'wind down' or 'come to an end' would be more appropriate.

What kinds of things can fizzle out?

The range is broad, but typical subjects include relationships, campaigns, protest movements, negotiations, trends, crazes, conversations, enthusiasm, momentum, and initiatives. What they share is that they all carry some expectation of energy, excitement, or impact — which is exactly what makes fizzling out disappointing.

Can 'fizzle out' be used in the passive, like 'the talks were fizzled out'?

No — this is not possible. Because fizzle out is intransitive and never takes an object, it cannot be turned into a passive construction. The subject of the sentence is always the thing that fizzles out, not something being acted upon.

Is 'fizzle out' too informal for written English?

Not at all — it is widely used in journalistic writing, news commentary, and opinion pieces without sounding out of place. It sits in a neutral-to-informal range, so it works well in most written and spoken contexts. Only in very formal academic prose might you prefer alternatives like 'lose momentum' or 'peter out'.

Can I drop the 'out' and just say 'fizzle'?

Not in modern English. The particle 'out' is an essential part of the phrasal verb — 'fizzle' on its own is archaic and would sound very unusual to a contemporary speaker. Always use the full form: fizzle out.

Related Phrasal Verbs

peter out

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