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undisclosed (adj)
undisguised (adj)
undisposed (adj)
undisputed (adj)
undistinguished (adj)
undistorted (adj)
undisturbed (adj)
undivided (adj)
undo (v)
undoing (n)
undomesticated (adj)
undone (adj)
undoubted (adj)
undoubtedly (adv)
undreamed-of (adj)
undress (v)
undressed (adj)
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undo (v)
Synonyms: unfasten, untie, unbutton, loosen, disengage, unwrap, open, unknot, unravel

Antonym: fasten


Synonyms: cancel out, negate, cancel, nullify, invalidate, render null and void, reverse, work against
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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