fight with

verb

fought with; fighting with; fights with

1

: to fight against (someone or something)

He fought with his wife over/about money.

The U.S. fought with Germany in World Wars I and II.

He fought with several worthy opponents.

2

: to fight on the same side as (someone or something)

The U.S. fought (together) with the Soviet Union in World War II.

3

: to fight by using (something, such as a weapon)

They were fighting with knives.

They fought with their fists.