invalid

Noun · Verb · Adjective
Synonyms: shut-indisableincapacitatehandicap

WordNet 3.0

Noun (1)

  1. someone who is incapacitated by a chronic illness or injurySynonyms: shut-in

Verb (2)

  1. force to retire, remove from active duty, as of firemen
  2. injure permanently“He was disabled in a car accident”Synonyms: disableincapacitatehandicap

Adjective (2)

  1. having no cogency or legal force“invalid reasoning”“an invalid driver's license”
  2. no longer valid“the license is invalid”
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Webster's Dictionary (GCIDE)

Invalid \In*val"id\, a. [Pref. in- not + valid: cf. F. invalide, L. invalidus infirm, weak. Cf. Invalid infirm.] [1913 Webster]

1.Of no force, weight, or cogency; not valid; weak. [1913 Webster]

2.(Law) Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement. [1913 Webster]

Invalid \In"va*lid\ (?; 277), n. [F. invalide, n. & a., L. invalidus, a. See Invalid null.] A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health who is unable to care for himself. [1913 Webster]
Invalid \In"va*lid\, a. [See Invalid, n.] Not well; feeble; infirm; sickly; as, he had an invalid daughter. [1913 Webster]
Invalid \In"va*lid\, v. t.

1.To make or render invalid or infirm. "Invalided, bent, and almost blind." --Dickens. [1913 Webster]

2.To classify or enroll as an invalid. [1913 Webster]

Peace coming, he was invalided on half pay.— Carlyle.[1913 Webster]
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