unpick

From Middle English unpiken, equivalent to un- +‎ pick.

unpick (third-person singular simple present unpicks, present participle unpicking, simple past and past participle unpicked)

1. (sewing) To undo sewing stitches.
2. (knitting) To undo knitting in order to reuse the wool.
3. To unravel or untangle the threads of a rope etc.
4. (figuratively) To disassemble.
   • 2011 January 25, Paul Fletcher, “Arsenal 3 - 0 Ipswich (agg 3 - 1)”, in BBC‎:

     The home team eventually started to unpick the Town defence and Fabregas forced a saved from visiting goalkeeper Marton Fulop after collecting a pass from Bendtner, who played on the right side of the front line.