Definition of "back down" in English

Verb

1. To take a less aggressive position in a conflict than one previously had, or has planned to have.

   • I was about to sue them, but I had to back down.
   • The boys had planned to fight during recess, but backed down after the principal found out.

2. To make (someone) take a less aggressive position.

3. To withdraw from a commitment or position; back out.