UNDO
unwrap, undo
(verb) remove the outer cover or wrapping of; “Let’s unwrap the gifts!”; “undo the parcel”
untie, undo, loosen
(verb) cause to become loose; “undo the shoelace”; “untie the knot”; “loosen the necktie”
undo
(verb) cancel, annul, or reverse an action or its effect; “I wish I could undo my actions”
unmake, undo
(verb) deprive of certain characteristics
undo
(verb) cause the ruin or downfall of; “A single mistake undid the President and he had to resign”
Source: WordNet® 3.1
Etymology 1
Verb
undo (third-person singular simple present undoes, present participle undoing, simple past undid, past participle undone) (transitive)
To reverse the effects of an action.
To unfasten.
(figuratively) To impoverish or ruin, as in reputation; to cause the downfall of.
Synonyms
• (reverse effects): cancel, reverse
• (unfasten): unbuckle, unbutton, untie, unzip
Antonyms
• (reverse effects): redo
• (unfasten): do up, button, button up, tie up, zip, zip up,
Noun
undo (plural undos)
(computing) An operation that reverses a previous action.
Etymology 2
Adjective
undo
Misspelling of undue.
Anagrams
• udon
Source: Wiktionary
Un*do", v. t. Etym: [AS. und. See 1st Un-, and Do to perform.]
1. To reverse, as what has been done; to annul; to bring to naught.
What's done can not be undone. Shak.
To-morrow, ere the setting sun, She 'd all undo that she had done.
Swift.
2. To loose; to open; to take to piece; to unfasten; to untie; hence,
to unravel; to solve; as, to undo a knot; to undo a puzzling
question; to undo a riddle. Tennyson.
Pray you, undo this button. Shak.
She took the spindle, and undoing the thread gradually, measured it.
Sir W. Scott.
3. To bring to poverty; to impoverish; to ruin, as in reputation,
morals, hopes, or the like; as, many are undone by unavoidable
losses, but more undo themselves by vices and dissipation, or by
indolence.
That quaffing and drinking will undo you, Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition