peter out

Idioms  

1. Dwindle or diminish and come to an end, as in Their enthusiasm soon petered out. The origin of this usage is unknown, but one authority suggests it may refer to the apostle Peter, whose enthusiastic support of Jesus quickly diminished so that he denied knowing him three times during the night after Jesus's arrest. [Mid-1800s]

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Example Sentences

See Examples For:

peter out

While most experts are predicting this hantavirus outbreak will peter out, it’s not the kind of prediction you want to be wrong about either.

From Salon ● May 11, 2026

Economists predict the current wave of inflation is likely to peter out later in the year, but they are uncertain as to when and by how much.

From MarketWatch ● Apr. 15, 2026

It remains to be seen when the rally will peter out.

From Barron's ● Dec. 10, 2025

Now, after more than 3½ years of conflict, the gusher is slowly starting to peter out.

From The Wall Street Journal ● Sep. 28, 2025

They are better trained than the Dauntless, whose voices take thirty seconds to peter out.

From "Insurgent" by Veronica Roth

Related Words

• abate
• die out
• ebb
• evaporate
• fade
• recede
• tail away
• tail off
• wane