unpick
1. [ verb ] become or cause to become undone by separating the fibers or threads of
Synonyms: unravel untangle unscramble unknot
Examples:

"the sweater unravelled"

Related terms: ravel ravel undo separate
2. [ verb ] undo (the stitches) of (a piece of sewing)
Related terms: undo
Similar spelling:   unpack
  unvoiced
  unbuckle
  unbacked