2 entries found for undo.
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Main Entry: un·do
Pronunciation: n-dü, n-
Function: verb
Inflected Form(s): un·did /-did/; un·done /-dn/; un·do·ing /-dü-i/ 1: to make or become unfastened or loosened : OPEN, UNTIE <undo a knot> 2: to destroy the effect of : NULLIFY, REVERSE 3 a: to cause the ruin of <your stubbornness undid you> <undone by greed> b: to disturb the calmness of : UPSET <she's come undone> - un·do·ernoun