tr.v., -dat·ed, -dat·ing, -dates.

To make invalid; nullify.

invalidation in·val'i·da'tion n.
invalidator in·val'i·da'tor n.

verb

To put an end to, especially formally and with authority: abolish, abrogate, annihilate, annul, cancel, negate, nullify, set aside, vitiate, void. Law extinguish. See continue/stop/pause.

v

Definition: render null and void
Antonyms: approve, permit, validate

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Note: click on a word meaning below to see its connections and related words.

The verb has 4 meanings:

Meaning #1: declare invalid
  Synonyms: annul, quash, void, avoid, nullify
  Antonym: validate (meaning #1)

Meaning #2: of cheques or tickets
  Synonym: cancel

Meaning #3: show to be invalid
  Synonym: nullify
  Antonym: validate (meaning #2)

Meaning #4: take away the legal force of or render ineffective
  Synonyms: void, vitiate
  Antonym: validate (meaning #4)

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Dansk (Danish)
v. tr. - gøre ugyldig, afkræfte, omstøde, underkende, kassere

Nederlands (Dutch)
ongeldig maken, ontkrachten

Français (French)
v. tr. - infirmer (un argument), annuler (une revendication), (Admin, Jur) annuler

Deutsch (German)
v. - entkräften, aufheben

Ελληνική (Greek)
v. - ακυρώνω, αναιρώ

Italiano (Italian)
invalidare, annullare

Português (Portuguese)
v. - invalidar

Русский (Russian)
считать неполноценным, делать недействительным

Español (Spanish)
v. tr. - refutar, invalidar, anular

Svenska (Swedish)
v. - göra ogiltig, upphäva, kullkasta, jäva (jur.)

中文（简体） (Chinese (Simplified))
使无效

中文（繁體） (Chinese (Traditional))
v. tr. - 使無效

한국어 (Korean)
v. tr. - 무효로 만들다

日本語 (Japanese)
v. - 無効にする

العربيه (Arabic)
‏(فعل) يبطل, يضعف‏

עברית (Hebrew)
v. tr. - ‮פסל, ביטל תקפו, הפריך‬

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