At the drop of a hat

Meaning

Immediately, without hesitation.

Usage

Common when praising someone’s promptness.

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.

Traditionally linked to the dropping of a hat to start a race or fight.

American in origin; recorded in the 19th century.