Idioms

on active duty
doing full-time service (usually used in the military when someone is doing full-time service)
The soldiers were on active duty when the hurricane reached the shore.

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  • on again, off again
  • on all fours
  • on an even keel
  • on and off
  • on and on
  • on any account
  • on approval
  • on behalf of (someone)
  • on bended knee
  • on board
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  • put on weight or put weight on
  • clear sailing
  • with no strings attached
  • get set
  • knock (someone) around or knock around (someone)
  • put one's mind to (something)
  • feel free to do (something)
  • poised to do (something)
  • build castles in the air/in Spain
  • in rehearsal


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