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  1. Dictionary
    invalid
    /ɪnˈvalɪd/

    adjective

    More definitions, origin and scrabble points

  2. 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…

  3. An invalid document, ticket, law, etc. is not legally or officially acceptable: I'm afraid your driving licence is invalid in Eastern Europe. An invalid opinion, argument, etc. is not correct, usually because it is not logical or not based on correct information: an invalid argument.

  4. noun. an infirm or sickly person. a person who is too sick or weak to take care of their own needs: My father was an invalid the last ten years of his life. Archaic. a member of the armed forces disabled for active service. adjective. unable to care for oneself due to infirmity or disability: his invalid sister. of or for invalids: invalid diets.

  5. An invalid is someone who is very ill or disabled and needs to be cared for by someone else.

  6. A person who is very sick or injured and needs frequent care is an invalid. Also, something no longer current or useful is invalid. The main uses of this word have to do with people and things that don't work very well anymore. A driver's license that has expired is invalid — it needs to be renewed. If you lost your health insurance, it's ...

  7. INVALID definition: 1. someone who is so sick that they have to be looked after by other people 2. An invalid document…. Learn more.

  8. invalid. adjective. /ɪnˈvælɪd/. /ɪnˈvælɪd/. not legally or officially acceptable. The treaty was declared invalid because it had not been ratified. People with invalid papers are deported to another country. This action would render the agreement invalid. Topics Law and justice c1.

  9. noun. /ˈɪnvəlɪd/ a person who needs other people to take care of them, because of illness that they have had for a long time. She had been a delicate child and her parents had treated her as an invalid. his invalid wife. He was found guilty of murdering his invalid father. Her husband was an invalid and couldn’t come to the door to open it.

  10. 1. Not legally or factually valid; null: an invalid license. 2. Falsely based or reasoned; faulty: an invalid argument. [Latin invalidus, weak : in-, not; see in-1 + validus, strong (from valēre, to be strong; see wal- in Indo-European roots ).] in′va·lid′i·ty (-və-lĭd′ĭ-tē) n. in·val′id·ly adv.

  11. Jun 2, 2024 · invalid (comparative more invalid, superlative most invalid) Not valid; not true, correct, acceptable or appropriate. Your argument is invalid because it uses circular reasoning. This invalid contract cannot be legally enforced.

  12. A weak, sickly person; esp., one who is chronically ill or disabled. Webster's New World. Similar definitions. Synonyms: weak. void. useless. unreasonable. unfounded. sickly. null. infirm. ineffective. feeble. cripple. valetudinarian. worthless. shut in. bed case. adjective. Incapacitated by illness or injury. American Heritage Medicine.

  13. adj. unable to care for oneself due to infirmity or disability: his invalid sister. of or for invalids: invalid diets. (of things) in poor or weakened condition: the invalid state of his rocking chair. v.t. to affect with disease; make an invalid: He was invalided for life.

  14. a person who is too sick or weak to take care of their own needs: My father was an invalid the last ten years of his life.

  15. From Longman Dictionary of Contemporary English in‧val‧id1 /ɪnˈvælɪd/ adjective 1 a contract, ticket, claim etc that is invalid is not legally or officially acceptable OPP valid Without the right date stamped on it, your ticket will be invalid. 2 an argument, reason etc that is invalid is not based on true facts or clear ideas, and lacks goo...

  16. INVALID meaning: 1 : not valid: such as; 2 : having no force or effect.

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

  18. INVALID meaning: 1. An invalid document, ticket, law, etc. is not legally or officially acceptable: 2. An invalid…. Learn more.

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

  20. Meaning & use. Pronunciation. Forms. Frequency. Compounds & derived words. Factsheet. 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. Entry status.

  21. Invalid is probably the oldest term for someone with physical conditions that are considered seriously limiting. It seems to be used primarily as a noun. in also has a heteronym (with emphasis on the second syllable) that is unrelated to this usage.

  22. INVALID meaning: 1. someone who is so sick that they have to be looked after by other people 2. An invalid document…. Learn more.

  23. 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.

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