had been unpinning

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of unpin.
  unpin

  verb (used with object)

  to remove pins from.

Related Words

• alleviate
• break up
• ease
• loose
• relax
• slacken
• undo
• unlock
• unscrew
• untie