Invalid :: Invalid (a.) Of no force, weight, or cogency; not valid; weak..
Invalid :: Invalid (a.) Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement..
Invalid :: Invalid (a.) A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health..
Invalid :: Invalid (n.) Not well; feeble; infirm; sickly; as, he had an invalid daughter..
Invalid :: Invalid (v. t.) To make or render invalid or infirm.
Invalid :: Invalid (v. t.) To classify or enroll as an invalid.
Invalidate :: Invalidate (v. t.) To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow; as, to invalidate an agreement or argument..
Invalidism :: Invalidism (n.) The condition of an invalid; sickness; infirmity.
Invalidity :: Invalidity (n.) Want of validity or cogency; want of legal force or efficacy; invalidness; as, the invalidity of an agreement or of a will..
Invalidity :: Invalidity (n.) Want of health; infirmity.
Invalidness :: Invalidness (n.) Invalidity; as, the invalidness of reasoning..