meaning of invalid
1. Of no force, weight, or cogency; not valid; weak.
2. Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement.
3. A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health.
4. Not well; feeble; infirm; sickly; as, he had an invalid daughter.
5. To make or render invalid or infirm.
6. To classify or enroll as an invalid.
7. someone who is incapacitated by a chronic illness or injury
Related Words
invalid | invalidate | invalidated | invalidating | invalidation | invalidator | invalide | invalidism | invalidity | invalidness |