change by reversal, reverse, turn - change to the contrary; "The trend was reversed"; "the tides turned against him"; "public opinion turned when it was revealed that the president had an affair with a White House intern"

unbrace, unlace, untie - undo the ties of; "They untied the prisoner"

unstrap - remove the strap or straps from

unhitch - unfasten or release from or as if from a hitch

unpick - undo (the stitches) of (a piece of sewing)

unfasten - cause to become undone; "unfasten your belt"

unbelt - undo the belt of; "unbelt your trousers"

unstaple - take the staples off; "unstaple the piece of paper from the receipt"

unclip - remove the clip from

unbutton - undo the buttons of; "unbutton the shirt"

unpin - remove the pins from; unfasten the pins of

disconnect, unplug - of electrical appliances

unbraid - undo the braids of; "unbraid my hair"

unknot, unpick, unravel, unscramble, untangle - become or cause to become undone by separating the fibers or threads of; "the sweater unravelled"

unwind, disentangle - separate the tangles of

unbuckle - undo the buckle of; "Unbuckle your seat belt"

spread, unfold, open, spread out - spread out or open from a closed or folded state; "open the map"; "spread your arms"

unwire - undo the wiring of

destroy, destruct - do away with, cause the destruction or undoing of; "The fire destroyed the house"

ruin - destroy or cause to fail; "This behavior will ruin your chances of winning the election"

alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"

uncover, expose - remove all or part of one's clothes to show one's body; "uncover your belly"; "The man exposed himself in the subway"