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

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 Also, something no longer current or useful is invalid.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 …

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 …

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

Find 81 different ways to say INVALID, along with antonyms, related words, and example sentences at Thesaurus.com.

Define invalid. invalid synonyms, invalid pronunciation, invalid translation, English dictionary definition of invalid. n. One who is incapacitated by a chronic illness or disability. adj. 1. Incapacitated by illness …

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

Look up invalid in Wiktionary, the free dictionary. Invalid may refer to: As the opposite of valid:

Invalid and invalid are spelled identically but are pronounced differently and have different meanings, which makes them heteronyms. We will examine the definitions of the words invalid and invalid, …

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 Also, something no longer current or useful is invalid.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 …