unlace

verb (used with object), un·laced, un·lac·ing.

1. to loosen or undo the lacing or laces of (a pair of shoes, a corset, etc.).
2. to loosen or remove the garments of (a person) by or as if by undoing laces.

verb (tr)

1. to loosen or undo the lacing of (shoes, garments, etc)
2. to unfasten or remove garments of (oneself or another) by or as if by undoing lacing

v.c.1300, from un- (2) + lace (v.). Related: Unlaced; unlacing.