Invalid Definition & Meaning - Merriam-Webster

Synonyms & Antonyms for invalid. Synonyms: Adjective (1). bad,; inoperative,; nonbinding,; nonvalid,; nugatory,; null,; null and void,; void. Login SignUp Hello, Games&Quizzes Thesaurus WordoftheDay Features BuyingGuide M-WBooks MyWordsMyWords ViewRecents Account LogOut invalid adjective(1) SaveWord in·​val·​id |\(ˌ)in-ˈva-ləd \ Definitionofinvalid (Entry1of4) :notvalid: a :beingwithoutfoundationorforceinfact,truth,orlaw aninvalidassumptiondeclaredthewillinvalid b :logicallyinconsequent invalid noun in·​va·​lid |\ˈin-və-ləd ,Britishusually-ˌlēd\ Definitionofinvalid (Entry2of4) :onewhoissicklyordisabled invalid verb in·​va·​lid |\ˈin-və-ləd ,-ˌlid,Britishusually-ˌlēdorˌin-və-ˈlēd\ invalided;invaliding;invalids Definitionofinvalid (Entry3of4) transitiveverb 1 :toremovefromactivedutybyreasonofsicknessordisability 2 :tomakesicklyordisabled invalid adjective(2) in·​va·​lid |\ˈin-və-ləd ,Britishusually-ˌlēd\ Definitionofinvalid (Entry4of4) 1 :affectedbydiseaseordisability:sickly 2 :of,relatingto,orsuitedtoonethatissick aninvalidchair OtherWordsfrominvalid Synonyms&Antonyms ExampleSentences LearnMoreAboutinvalid OtherWordsfrominvalid Adjective(1) invalidly \ (ˌ)in-​ˈva-​ləd-​lē \ adverb Synonyms&Antonymsforinvalid Synonyms:Adjective(1) bad, inoperative, nonbinding, nonvalid, nugatory, null, nullandvoid, void Synonyms:Adjective(2) ailing, sickly, weakly Antonyms:Adjective(1) binding, good, valid Antonyms:Adjective(2) healthy, well VisittheThesaurusforMore  ExamplesofinvalidinaSentence Noun Herhusbandhasbecomeaninvalid. FirstKnownUseofinvalid Adjective(1) 1542,inthemeaningdefinedaboveNoun 1701,inthemeaningdefinedaboveVerb 1787,inthemeaningdefinedatsense1Adjective(2) 1642,inthemeaningdefinedatsense1 HistoryandEtymologyforinvalid Adjective(1) Latininvalidusweak,fromin-+validusstrong—moreatvalid Adjective(2) Latin&French;Frenchinvalide,fromLatininvalidus LearnMoreAboutinvalid Shareinvalid PosttheDefinitionofinvalidtoFacebook SharetheDefinitionofinvalidonTwitter TimeTravelerforinvalid Thefirstknownuseofinvalidwas in1542 Seemorewordsfromthesameyear DictionaryEntriesNearinvalid invagination invalid invalidate SeeMoreNearbyEntries  Statisticsforinvalid Look-upPopularity CitethisEntry “Invalid.”Merriam-Webster.comDictionary,Merriam-Webster,https://www.merriam-webster.com/dictionary/invalid.Accessed7Dec.2021. Style:MLA MLA Chicago APA Merriam-Webster MoreDefinitionsforinvalid invalid noun EnglishLanguageLearnersDefinitionofinvalid (Entry2of2) :apersonwhoneedstobecaredforbecauseofinjuryorillness SeethefulldefinitionforinvalidintheEnglishLanguageLearnersDictionary invalid verb EnglishLanguageLearnersDefinitionofinvalid (Entry3of2) :torelease(someone)fromactivemilitaryservicebecauseofillnessorinjury invalid adjective in·​val·​id |\in-ˈva-ləd \ KidsDefinitionofinvalid (Entry1of2) :havingnoforceoreffect invalid noun in·​va·​lid |\ˈin-və-ləd \ KidsDefinitionofinvalid (Entry2of2) :apersonsufferingfromsicknessordisability invalid adjective in·​va·​lid |\ˈin-və-ləd,Britishusually-ˌlēd\ Medical Definitionofinvalid (Entry1of3) 1 :affectedbydiseaseordisability:sickly 2 :of,relatingto,orsuitedtoonethatissick aninvalidchair invalid noun Medical Definitionofinvalid (Entry2of3) :onewhoissicklyordisabled invalid transitiveverb in·​va·​lid |\ˈin-və-ləd,-ˌlid,Britishusually-ˌlēdorˌin-və-ˈlēd\ Medical Definitionofinvalid (Entry3of3) 1 :toremovefromactivedutybyreasonofsicknessordisability wasinvalidedoutofthearmy 2 :tomakesicklyordisabled apatientinvalidedbyvalvulardisease invalid adjective in·​val·​id |\in-ˈva-ləd \ Legal Definitionofinvalid :beingwithoutforceoreffectunderthelaw declaredthewillinvalid OtherWordsfrominvalid invalidly adverb MorefromMerriam-Websteroninvalid Nglish:TranslationofinvalidforSpanishSpeakers BritannicaEnglish:TranslationofinvalidforArabicSpeakers WORDOFTHEDAY ostracize SeeDefinitionsandExamples» GetWordoftheDaydailyemail! TestYourVocabulary DifficultSpellingWordsQuiz Whichisthecorrectspelling? acommadate acommodate accommodate accomodate Testyourknowledge-andmaybelearnsomethingalongtheway. TAKETHEQUIZ SubscribetoAmerica'slargestdictionaryandgetthousandsmoredefinitionsandadvancedsearch—adfree! Merriam-Websterunabridged WordsatPlay “InVinoVeritas”andOtherLatinPhrasestoLiveBy Top10LatinPhrases Merriam-Webster'sWordsoftheWeek-Dec.3 Fromtheweekending12/3/2021 Is'corps'singularorplural? BlameFrench Funner,Stupider,andOtherWordsThatAreinFactReal Don'targuewiththedictionary AsktheEditors 'Everyday'vs.'EveryDay' Asimpletricktokeepthemseparate WhatIs'SemanticBleaching'? How'literally'canmean"figuratively" Literally Howtouseawordthat(literally)drivessomepe... IsSingular'They'aBetterChoice? Theawkwardcaseof'hisorher' WordGames ConfusingWordsStrikesAgain Howmanydoyouknow? Takethequiz NameThoseHerbsandSpices Howmanydoyouknow? Takethequiz TrueorFalse? Testyourknowledge-andmaybelearnsomethinga... Takethequiz