fight hammer and tongs
fight (someone or something) hammer and tongs
To combat someone or something with tremendous fervor, determination, energy, or forcefulness. An allusion to the force with which a blacksmith strikes metal using a hammer and tongs. What started as a minor disagreement has escalated into a heated argument, and the two have been fighting each other hammer and tongs ever since.
fight someone or something hammer and tongsand fight someone or something tooth and nail; go at it hammer and tongs; go at it tooth and nail
Fig. to fight against someone or something energetically and with great determination. They fought against the robber tooth and nail. The dogs were fighting each other hammer and tongs.