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Region: General | Usage example: The campaign ran out of steam after week two.

Run out of steam

Meaning

Lose energy or momentum.

Usage

Used when enthusiasm decreases.

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

Steam engines losing pressure.

Industrial Revolution metaphor extended to people.