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Region: US | Usage example: His suggestion came out of left field.

Out of left field

Meaning

Unexpected or surprising.

Usage

Used to describe unpredictable ideas.

Origin & History

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

Baseball term for hits originating from left field that catch fielders off guard.

20th-century American sports writing broadened it to any surprise.