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Region: General | Usage example: His attitude blows hot and cold, so we never know what to expect.

Blow hot and cold

Meaning

Switch between enthusiasm and disinterest.

Usage

Describes inconsistent people or reactions.

Origin & History

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

Ancient Roman tradition of mixing hot and cold baths.

Used since the 17th century in moral essays.