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.

1. an infirm or sickly person, esp. one who is too sick or weak to care for himself or herself. 2. unable to care for oneself due to infirmity or disability. 3. of or for invalids. 4. to make an …

May 18, 2025 · invalid (comparative more invalid, superlative most invalid) Not valid; not true, correct, acceptable or appropriate. Your argument is invalid because it uses circular …

An invalid is someone who needs to be cared for because they have an illness or disability. I hate being treated as an 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 Also, something no longer current or useful is invalid.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 …

Definition of invalid adjective from the Oxford Advanced Learner's Dictionary. not legally or officially acceptable. The treaty was declared invalid because it had not been ratified. People …

Invalid generally refers to something that is not true, correct, acceptable or legally recognized. It denotes a lack of soundness, cogency, or legality, rendering something ineffective or useless.

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 …

Her husband has become an invalid. She cares for her invalid husband at home. He was invalided out of the army. He was invalided home.