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Region: UK | Usage example: She fought tooth and nail to keep the community library open.

Fight tooth and nail

Meaning

Struggle vigorously and aggressively to achieve something.

Usage

Often used when describing defenders of a cause or individuals resisting against odds.

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.

Evokes literal animal fights where opponents used their teeth and claws.

Dates back to the early 1600s in English literature to depict tenacious battle scenes.