has been unbinding

• present perfect progressive

  present perfect progressive

  Used to describe an action that began in the past, has continued continuously, and is still in progress.

  of unbind (3rd person singular).
  unbind

  verb (used with object)

  to release from bonds or restraint, as a prisoner; free.

More Suggestions

• sewn binding
• adhesive binding
• egg-binding
• half binding
• nonbinding
• seam binding
• self-winding
• time-binding