go at it hammer and tongs

[go at it hammer and tongs] {v. phr.}, {informal} 1. To attack orfight with great strength or energy; have a bad argument.

Billslapped George's face and now they're going at it hammer and tongs inback of the house.

Helen and Mary have been arguing all day, andnow they are going at it hammer and tongs again.

2. To start or dosomething with much strength, energy, or enthusiasm.

The farmer hadto chop down a tree and he went at it hammer and tongs.

Charleshad a lot of homework to do and he went at it hammer and tongs tillbedtime.

Compare: IN EARNEST, WITH MIGHT AND MAIN.