6 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.

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

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

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.

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

A person who is very sick or injured and needs frequent care is an invalid. Also, something no longer current or useful is invalid.

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

The comprehensive definition of invalid. Includes pronunciation, synonyms, etymology, and usage examples to help you master this word.