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Adjective: invalid  in-vu-lid
  1. No longer valid
    "the licence is invalid"
  2. Having no cogency or legal force
    "invalid reasoning"; "an invalid driver's licence"
Noun: invalid  in-vu-lid
  1. Someone who is incapacitated by a chronic illness or injury
    - shut-in
Verb: invalid  in-vu-lid
  1. Force to retire, remove from active duty, as of firemen
  2. Injure permanently
    "He was invalided in a car accident";
    - disable, incapacitate, handicap

Derived forms: invalids, invaliding, invalided

See also: bad, expired, fallacious, false, illegitimate, invalidated, null, null and void, nullified, sophistic, sophistical, spurious, uncollectible, unsound, void

Type of: diseased person, injure, remove, sick person, sufferer, wound

Antonym: valid

Part of: homebound

Encyclopedia: Invalid