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Region: General | Usage example: The idea felt old hat after seeing recent breakthroughs.

Old hat

Meaning

Outdated or unexciting.

Usage

Used to dismiss stale practices.

Origin & History

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

Refers to old-fashioned hats that fell out of style.

Early 1900s writers used it in contrast to new fashions.