(New American Roget's College Thesaurus)
v. t. nullify, cancel, annul, void. See nullification.
(Roget's IV) v.
Syn. annul, refute, nullify; see cancel 2 , revoke .
(Roget's 3 Superthesaurus) v.
void, nullify, annul, cancel, repeal, countermand, revoke, negate, disqualify, quash.
ANT.: validate
(Roget's Thesaurus II) 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.

English dictionary for students. 2013.


Look at other dictionaries:

  • invalidate — in·val·i·date /in va lə ˌdāt/ vt: to make or declare invalid the high court invalidating the statute in·val·i·da·tion /in ˌva lə dā shən/ n Merriam Webster’s Dictionary of Law. Merriam Webster. 1996 …   Law dictionary

  • invalidate — in‧val‧i‧date [ɪnˈvældeɪt] verb [transitive] LAW to make a contract, agreement, document etc invalid: • Failure to follow the instructions correctly could invalidate the guarantee. • The Judge s ruling invalidated the company s patent.… …   Financial and business terms

  • Invalidate — In*val i*date, v. t. [imp. & p. p. {Invalidated}; p. pr. & vb. n. {Invalidating}.] [From {Invalid} null.] To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow; as, to… …   The Collaborative International Dictionary of English

  • invalidate — (v.) 1640s, from INVALID (Cf. invalid) + ATE (Cf. ate) (2). Related: Invalidated; invalidating …   Etymology dictionary

  • invalidate — *nullify, negate, annul, abrogate Analogous words: negative, counteract, *neutralize: void, vacate, quash, *annul Antonyms: validate Contrasted words: *enforce, implement …   New Dictionary of Synonyms

  • invalidate — [v] render null and void abate, abolish, abrogate, annihilate, annul, blow sky high*, cancel, circumduct, counteract, counterbalance, disannul, discredit, disqualify, impair, negate, negative, neutralize, nix, nullify, offset, overrule, overthrow …   New thesaurus

  • invalidate — [in val′ə dāt΄] vt. invalidated, invalidating [ INVALID2 + ATE1] to make invalid; deprive of legal force invalidation n …   English World dictionary

  • invalidate — UK [ɪnˈvælɪdeɪt] / US [ɪnˈvælɪˌdeɪt] verb [transitive] Word forms invalidate : present tense I/you/we/they invalidate he/she/it invalidates present participle invalidating past tense invalidated past participle invalidated formal 1) to make… …   English dictionary

  • invalidate — [[t]ɪnvæ̱lɪdeɪt[/t]] invalidates, invalidating, invalidated 1) VERB To invalidate something such as an argument, conclusion, or result means to prove that it is wrong or cause it to be wrong. [V n] Any form of physical activity will invalidate… …   English dictionary

  • invalidate — in|val|i|date [ınˈvælıdeıt] v [T] 1.) to make a document, ticket, claim etc no longer legally or officially acceptable ▪ Failure to disclose all relevant changes may invalidate your policy. 2.) to show that something such as a belief or… …   Dictionary of contemporary English

  • invalidate — in|val|i|date [ ın vælı,deıt ] verb transitive FORMAL 1. ) to make something such as a document, contract, or process no longer legally effective: Failure to report any changes in your situation may invalidate your insurance policy. 2. ) to prove …   Usage of the words and phrases in modern English

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