Wiktionary

undo

See also: -undo

English

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Pronunciation

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Etymology 1

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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”).

Verb

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undo (third-person singular simple present undoes, present participle undoing, simple past undid, past participle undone) (transitive)

  1. To reverse the effects of an action.
    Fortunately, we can undo most of the damage to the system by the war.
    • 1610–1611 (date written), William Shakespeare, “The Tempest”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act I, scene ii], page 4:
      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.
    • 2011 October 15, Michael Da Silva, “Wigan 1 - 3 Bolton”, in BBC Sport‎[1]:
      But Wigan undid their good work by conceding an avoidable second goal deep into first-half injury time.
    • 2019 April 6, Caleb Quinley, “Thailand: Anti-military party leader faces sedition charges”, in Al Jazeera‎[2], Doha: Al Jazeera, retrieved 2019-04-06:
      And judging by how well the progressive and youth-favoured party did, many observers suspect this latest round of legal charges are a response to Future Forward's commitment to undo the legacy of military rule and undertake democratic reforms.
  2. To unfasten.
    Could you undo my buckle for me?
  3. (figuratively) To impoverish or ruin, as in reputation; to cause the downfall of.
Synonyms
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Antonyms
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Derived terms
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Descendants
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  • → Welsh: andwyo
Translations
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Noun

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undo (plural undos)

  1. (computing) An operation that reverses a previous action.
    How many undos does this program support?
Translations
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Etymology 2

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Adjective

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undo

  1. Misspelling of undue.

Further reading

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References

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  1. ^ “undo”, in OED Online  ⁠, Oxford: Oxford University Press, launched 2000.

Anagrams

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Latin

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Etymology

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From unda (“a wave”).

Pronunciation

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Verb

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undō (present infinitive undāre, perfect active undāvī, supine undātum); first conjugation

  1. to rise in waves
  2. to overflow with, abound in
  3. to wave, undulate

Conjugation

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   Conjugation of undō (first conjugation)
indicative singular plural
first second third first second third
active present undō undās undat undāmus undātis undant
imperfect undābam undābās undābat undābāmus undābātis undābant
future undābō undābis undābit undābimus undābitis undābunt
perfect undāvī undāvistī undāvit undāvimus undāvistis undāvērunt,
undāvēre
pluperfect undāveram undāverās undāverat undāverāmus undāverātis undāverant
future perfect undāverō undāveris undāverit undāverimus undāveritis undāverint
passive present undor undāris,
undāre 		undātur undāmur undāminī undantur
imperfect undābar undābāris,
undābāre 		undābātur undābāmur undābāminī undābantur
future undābor undāberis,
undābere 		undābitur undābimur undābiminī undābuntur
perfect undātus + present active indicative of sum
pluperfect undātus + imperfect active indicative of sum
future perfect undātus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present undem undēs undet undēmus undētis undent
imperfect undārem undārēs undāret undārēmus undārētis undārent
perfect undāverim undāverīs undāverit undāverīmus undāverītis undāverint
pluperfect undāvissem undāvissēs undāvisset undāvissēmus undāvissētis undāvissent
passive present under undēris,
undēre 		undētur undēmur undēminī undentur
imperfect undārer undārēris,
undārēre 		undārētur undārēmur undārēminī undārentur
perfect undātus + present active subjunctive of sum
pluperfect undātus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present — undā — — undāte —
future — undātō undātō — undātōte undantō
passive present — undāre — — undāminī —
future — undātor undātor — — undantor
non-finite forms infinitive participle
active passive active passive
present undāre undārī undāns —
future undātūrum esse undātum īrī undātūrus undandus
perfect undāvisse undātum esse — undātus
future perfect — undātum fore — —
perfect potential undātūrum fuisse — — —
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
undandī undandō undandum undandō undātum undātū

Derived terms

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Descendants

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References

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Lindu

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Noun

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undo

  1. flattery

Old English

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Pronunciation

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Verb

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undō

  1. inflection of undōn:
    1. first-person singular present indicative
    2. singular present subjunctive
    3. singular imperative
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