keep at arm's length

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keep at arm's length

1. (transitive) Keep at a distance, away from one's body.
2. (transitive, figuratively) Avoid direct confrontation or struggle.
   • 2013 November 6, Chris Bevan, “Borussia Dortmund 0-1 Arsenal”, in BBC Sport:

     Ramsey's goal secured the points, but the win came on the back of a measured performance that saw Arsenal keep Dortmund at arm's length for long periods and score with a classic counter-attack.

3. (transitive, figuratively) Avoid a close relationship.

   She's been keeping me at arm's length all the time. She doesn't want to get involved.