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1. Dictionary

   In·val·id

   /inˈvaləd/

   

   adjective

   • 1. (of an official document or procedure) not legally recognized and therefore void because contravening a regulation or law: "the will was declared invalid and the children were entitled to the estate" Similar voidlegally voidnullnull and voidunenforceablenot bindinginoperativeworthlessillegitimateincorrectimproperunacceptableinapplicableannullednullifiedcanceledrevokedrescindedabolishedrepealedOpposite validbinding
   • ▪ (especially of an argument, statement, or theory) not true because based on erroneous information or unsound reasoning: "a comparison is invalid if we are not comparing like with like" Similar falseuntrueinaccuratefaultyfallaciousspuriousinadequateunconvincingunsoundweakwrongwrongly inferredwide of the markoff targetunjustifiedunsubstantiatedunwarranteduntenablebaselessill-foundedunfoundedgroundlessillogicalirrationalunscientificabsurdpreposterousinconsistentinformal:off beamoutway outfull of holesbogusOpposite trueaccurate
   • ▪ (of computer instructions, data, etc.) not conforming to the correct format or specifications.

   Word Origin mid 16th century (earlier than valid): from Latin invalidus, from in- ‘not’ + validus ‘strong’ (see valid).

   Derivatives

   • 1. invalidly adverb

   Scrabble Points: 11

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2. dictionary.cambridge.org › essential-british-english › invalidinvalid | definition in the Cambridge Essential English ...

   dictionary.cambridge.org › essential-british-english › invalid

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   noun. uk / ˈɪnvəlɪd/ someone who is so ill that they have to be cared for by other people. invalid. adjective. uk / ɪnˈvælɪd/ An invalid document or ticket is not legally acceptable. (Definition of invalid from the Cambridge Essential Dictionary © Cambridge University Press) Translations of invalid. in Chinese (Traditional)

3. www.merriam-webster.com › dictionary › invalidsInvalids Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › invalids

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   a. : being without foundation or force in fact, truth, or law. an invalid assumption. declared the will invalid. b. : logically inconsequent. invalidly. (ˌ)in-ˈva-ləd-lē. adverb. invalid. 2 of 4. noun. in· va· lid ˈin-və-ləd. British usually -ˌlēd. : one who is sickly or disabled. invalid. 3 of 4. verb. in· va· lid ˈin-və-ləd. -ˌlid,

4. dictionary.cambridge.org › thesaurus › invalidINVALID - 48 Synonyms and Antonyms - Cambridge English

   dictionary.cambridge.org › thesaurus › invalid

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   noun. These are words and phrases related to invalid. Click on any word or phrase to go to its thesaurus page. Or, go to the definition of invalid. The invalid is confined to a wheelchair. Synonyms. chronically ill person. disabled person. enfeebled person. stricken person. valetudinarian. invalid. adjective.

5. www.oed.com › dictionary › invalid_adj1invalid, adj.¹ meanings, etymology and more | Oxford English ...

   www.oed.com › dictionary › invalid_adj1

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   What does the adjective invalid mean? There are two meanings listed in OED's entry for the adjective invalid , one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

6. www.collinsdictionary.com › english-thesaurus › invalidSynonyms of INVALID | Collins American English Thesaurus

   www.collinsdictionary.com › english-thesaurus › invalid

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   Apr 22, 2024 · Definition. a person who is disabled or chronically ill. I hate being treated as an invalid. Synonyms. patient. sufferer. convalescent.

7. www.wordsmyth.netinvalid | Dictionaries and vocabulary tools for English ...

   www.wordsmyth.net

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   invalid 1: one who is ill or disabled, esp. chronically. [4 definitions] invalid 2: without legal or factual force or effect; not valid; void. [2 definitions]

8. english.stackexchange.com › questions › 123898politeness - invalid vs handicap vs disabled - English ...

   english.stackexchange.com › questions › 123898

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   invalid: someone who is bedridden or too frail to leave home. That is they may not be handicaped or crippled but for whatever reason won't leave home. This is usually used for an older, sickly person. The word sounds a bit old fashioned/out of date and probably wouldn't be used any more.