Definition of "turn against" in English

Verb

1. To rebel or oppose to something formerly supported.

   • They turned against their leader.

2. To set against or in opposition to something.

   • She turned her umbrella against the wind.
   • She turned against the wind.
   • She turned him against his friends.

3. To use to the disadvantage or injury of.

   • His argument was turned against him.
   • They turned their arms against their former allies.