unpin

/ˈʌnˌpɪn/

Other forms: unpinned; unpinning; unpins

Definitions of unpin

1. verb

   remove the pins from; unfasten the pins of
   antonyms:

   pin

   attach or fasten with pins or as if with pins

   type of:

   undo

   cancel, annul, or reverse an action or its effect