undo
verbnounadjectivecommon in dialogue
- United Kingdom//ʌnˈduː//
To reverse the effects of an action.
verb
- 1
To reverse the effects of an action.
Fortunately, we can undo most of the damage to the system by the war.
What's done can't be undone.
Pro.[…]it was a torment / To lay vpon the damn'd, which Sycorax / Could not againe vndoe ; it was mine Art, / When I arriu'd, and heard thee, that made gape / The Pyne, and let thee out.
But Wigan undid their good work by conceding an avoidable second goal deep into first-half injury time.
- 2
To unfasten.
Could you undo my buckle for me?
- 3
To unfasten the clothing of (a person).
PROSTITUTE: Undo me. There's a dear.
- 4
figurativeTo impoverish or ruin, as in reputation; to cause the downfall of.
Woe is me, for I am undone!
Etymology
From Middle English undōn, from Old English ondōn, from Proto-West Germanic *andadōn (“to undo”), equivalent to un- + do. Cognate with West Frisian ûndwaan, ûntdwaan (“to undo; rid”), Dutch ontdoen (“to undo”).
noun
- 1
An operation that reverses a previous action.
How many undos does this program support?
adjective
- 1
Variant of undueMisspelling of undue.
Forms
- plural
- undos
- past tense
- undid
- past participle
- undone
- present participle
- undoing
- third person singular
- undoes
undo · To reverse the effects of an action.
undone · Not done.undoubtedly · Without doubt; definitely.undress · To remove one’s clothing.