Answer: unknit

AnswerCrossword Clue
UNKNITSmooth out, as one's brow
UNKNITSeparate.
UNKNITUnravel.
UNKNITRavel
UNKNITRavel or unravel
UNKNITStraighten out
UNKNITTake apart
UNKNITMake less ravelly
unknitto become undone
unknitto unravel (to separate the threads of)
unknitto smooth out (something wrinkled)
unknitto untie or unfasten (a knot, tangle, etc.); unravel (something knitted); undo
unknitto weaken, undo, or destroy