fight tooth and claw

fight tooth and claw/nail

to fight very hard to achieve something (often + to do sth) We fought tooth and nail to retain our share of the business.

Name	Pronounced	Usage
Ilmarinen	-	Finnish Mythology
Agnesi	['ægnisi]
Clotilda	klə-TIL-də	English
Benedict	['benədikt]
Celina	tse-LEE-nah	Polish
Thorne	[θɔ:n]