fight tooth and nail
fight tooth and nail
Engage in vigorous combat or make a strenuous effort, using all one's resources. For example, I'm going to fight tooth and nail for that promotion. This expression, with its allusion to biting and scratching, was first recorded in 1576.
See also: and, fight, nail, tooth
fight (somebody/something) tooth and nail
to use a lot of effort to oppose someone or achieve something We fought tooth and nail to keep our share of the business. They vowed to fight the new legislation tooth and nail.
See also: and, fight, nail, tooth