undo

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Contents

English [edit]

Etymology [edit]

un- +‎ do

Pronunciation [edit]

Verb [edit]

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

  1. To reverse the effects of an action. syn.
    Fortunately, we can undo most of the damage to the system by the war.
    • 2011 October 15, Michael Da Silva, “Wigan 1 - 3 Bolton”, BBC Sport:
      But Wigan undid their good work by conceding an avoidable second goal deep into first-half injury time.
  2. To unfasten. ant. syn.
    Could you undo my buckle for me?
  3. (figuratively) to be heading for or to cause a downfall

Synonyms [edit]

Antonyms [edit]

Translations [edit]

to reverse
to unfasten

External links [edit]

References [edit]

  1. ^ “undo” in OED Online, Oxford University Press, 1989.

Anagrams [edit]

Latin [edit]

Etymology [edit]

From unda (“a wave”)

Verb [edit]

present active undō, present infinitive undāre, perfect active undāvī, supine undātum.

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

Inflection [edit]

First Conjugation
indicative singular plural
first second third first second third
active present undō undās undat undāmus undātis undant
future undābō undābis undābit undābimus undābitis undābunt
imperfect undābam undābās undābat undābāmus undābātis undābant
perfect undāvī undāvistī undāvit undāvimus undāvistis undāvērunt
future perfect undāverō undāveris undāverit undāverimus undāveritis undāverint
pluperfect undāveram undāverās undāverat undāverāmus undāverātis undāverant
passive present undor undāris undātur undāmur undāminī undantur
future undābor undāberis undābitur undābimur undābiminī undābuntur
imperfect undābar undābāris undābātur undābāmur undābāminī undābantur
perfect Use undātus m, undāta f, undātum n followed by the present indicative of sum.
future perfect Use undātus m, undāta f, undātum n followed by the future indicative of sum.
pluperfect Use undātus m, undāta f, undātum n followed by the imperfect 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 undētur undēmur undēminī undentur
imperfect undārer undārēris undārētur undārēmur undārēminī undārentur
perfect Use undātus m, undāta f, undātum n followed by the present subjunctive of sum.
pluperfect Use undātus m, undāta f, undātum n followed by the imperfect subjunctive of sum.
imperatives active passive
present (you) future (you) future (he/she) present (you) future (you) future (he/she)
singular undā undātō undātō undāre undātor undātor
plural undāte undātōte undantō undāminī — undantor
present perfect future present perfect future
infinitives undāre undāvisse undātūrus esse undārī undātus esse undātum īrī
participles undāns (undantis) — undātūrus-ra, -rum — undātus-a, -um undandus-nda, -ndum

Derived terms [edit]

Descendants [edit]

References [edit]

  • undo in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879
  • redound in The Century Dictionary, The Century Co., New York, 1911
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