: 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.
: to fight on the same side as (someone or something)
The U.S. fought (together) with the Soviet Union in World War II.
: to fight by using (something, such as a weapon)
They were fighting with knives. They fought with their fists.
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