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   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. www.thesaurus.com › browse › invalid66 Synonyms & Antonyms for INVALID | Thesaurus.com

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   Find 66 different ways to say INVALID, along with antonyms, related words, and example sentences at Thesaurus.com.

3. www.merriam-webster.com › thesaurus › invalidINVALID Synonyms: 269 Similar and Opposite Words - ...

   www.merriam-webster.com › thesaurus › invalid

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   Synonyms for INVALID: weak, fragile, weakly, dying, sickly, frail, sick, ailing; Antonyms of INVALID: well, healthy, whole, sound, wholesome, fit, hale, hearty.

4. www.powerthesaurus.org › invalidINVALID in Thesaurus: 1000+ Synonyms & Antonyms for INVALID

   www.powerthesaurus.org › invalid

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   What's the definition of Invalid in thesaurus? Most related words/phrases with sentence examples define Invalid meaning and usage.

5. thesaurus.yourdictionary.com › invalidInvalid Synonyms and Antonyms - YourDictionary

   thesaurus.yourdictionary.com › invalid

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   Synonyms for INVALID: false, unsound, fallacious, baseless, illogical, inauthentic, inoperative, sophistic, nugatory, null, specious; Antonyms for INVALID: healthy, well, valid, true, worthwhile, worthy, sound.

6. www.powerthesaurus.org › invalid › synonymsInvalid synonyms - 1 750 Words and Phrases for Invalid - Power ...

   www.powerthesaurus.org › invalid › synonyms

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   adj. # unofficial , null. unconvincing. adj. # poor , argument. Another way to say Invalid? Synonyms for Invalid (other words and phrases for Invalid).

7. www.wordhippo.com › what-is › another-word-forWhat is another word for invalid - WordHippo

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   Find 2,168 synonyms for invalid and other similar words that you can use instead based on 15 separate contexts from our thesaurus.

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

   dictionary.cambridge.org › thesaurus › invalid

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   Synonyms and antonyms of. invalid. in English. invalid. 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.

9. www.vocabulary.com › dictionary › invalidInvalid - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › invalid

   invalid. Other forms: invalids; invalided; invaliding; invalidly. A person who is very sick or injured and needs frequent care is an invalid. Also, something no longer current or useful is invalid.

10. www.merriam-webster.com › dictionary › invalidInvalid Definition & Meaning - Merriam-Webster

    www.merriam-webster.com › dictionary › invalid

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    The meaning of INVALID is not valid. How to use invalid in a sentence. not valid:; being without foundation or force in fact, truth, or law; logically inconsequent…

11. www.collinsdictionary.com › dictionary › english-thesaurusINVALID Synonyms | Collins English Thesaurus

    www.collinsdictionary.com › dictionary › english-thesaurus

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    Synonyms for INVALID in English: patient, sufferer, convalescent, valetudinarian, null and void, void, worthless, untrue, null, not binding, ….