3 days ago · The meaning of INVALID is not valid. How to use invalid in a sentence.

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

May 17, 2026 · invalid (third-person singular simple present invalids, present participle invaliding, simple past and past participle invalided) (UK, transitive) To exempt from (often military) duty because of …

INVALID definition: an infirm or sickly person. See examples of invalid used in a sentence.

6 meanings: 1. a. a person with disablement or chronic ill health b. (as modifier) 2. incapacitated or disabled by injury,.... Click for more definitions.

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

Discover the word "INVALID" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource.

3 days ago · not valid: such as; having no force or effect; not based on truth or fact : not logical or correct… See the full definition

Learn the 3 key meanings of 'invalid' (adj.): not legally valid, logically flawed, and a chronically ill person. See clear examples, avoid common mistakes, and understand the difference between 'invalid' and …

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 …