Jun 18, 2026 · 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.

An invalid document, ticket, law, etc. is not legally or officially acceptable. I'm afraid your driving licence is invalid in Eastern Europe. Me temo que su carné de conducir no es válido en Europa del Este. Is …

May 17, 2026 · Adjective invalid (comparative more invalid, superlative most invalid) Not valid; not true, correct, acceptable, or appropriate. Synonyms: disallowed, nonvalid Antonym: valid Your argument is …

解説 Erroneous or unrecognizable because of a flaw in reasoning or an error in input. Invalid results, for example, might occur if the logic in a program is faulty.

a person who is too sick or weak to care for himself or herself: My father was an invalid the last ten years of his life. [Archaic.]a member of the armed forces disabled for active service.

Adjective 1. having no cogency or legal force; " invalid reasoning" "an invalid driver's license" 2. no longer valid; "the license is invalid "

If an action, procedure, or document is invalid, it cannot be accepted, because it breaks the law or some official rule. The trial was stopped and the results declared invalid. We cannot accept liability if you …

Definition of invalid adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Jun 18, 2026 · The simple definition of INVALID is not valid: such as.