Noah Webster's Dictionary 1. (a.) Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement. 2. (a.) of no force, weight, or cogency; not valid; weak. 3. (n.) A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health. 4. (n.) Not well; feeble; infirm; sickly; as, he had an invalid daughter. 5. (v. t.) To make or render invalid or infirm. 6. (v. t.) To classify or enroll as an invalid.

Multi-Version Concordance Invalid (3 Occurrences) Luke 13:11 where a woman was present who for eighteen years had been a confirmed invalid: she was bent double, and was unable to lift herself to her full height. (WEY) John 5:5 And there was one man there who had been an invalid for thirty-eight years. (WEY NIV) John 5:7 The sick man answered him, "Sir, I have no one to put me into the pool when the water is stirred up, but while I'm coming, another steps down before me." (See NIV)