Definition of Invalid

1. Noun. Someone who is incapacitated by a chronic illness or injury.

Exact synonyms: Shut-in
Group relationships: Homebound
Generic synonyms: Diseased Person, Sick Person, Sufferer

2. Verb. Force to retire, remove from active duty, as of firemen.
Generic synonyms: Remove

3. Adjective. Having no cogency or legal force. "An invalid driver's license"

4. Verb. Injure permanently. "He was disabled in a car accident"
Exact synonyms: Disable, Handicap, Incapacitate
Generic synonyms: Injure, Wound
Specialized synonyms: Hock
Derivative terms: Disablement, Handicap

5. Adjective. No longer valid. "The license is invalid"
Similar to: Expired

Definition of Invalid

1. a. Of no force, weight, or cogency; not valid; weak.

2. n. A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health.

3. a. Not well; feeble; infirm; sickly; as, he had an invalid daughter.

4. v. t. To make or render invalid or infirm.

Definition of Invalid

1. Adjective. Not valid; not true, correct, acceptable or appropriate. ¹

2. Noun. One who is confined to home or bed because of illness, disability or injury ¹

3. Noun. Any person with a disability. ¹

4. Adjective. Intended for use by an invalid. ¹

5. Verb. (British) To exempt from duty because of injury or ill health. ¹

¹ Source:

Definition of Invalid

1. to disable physically [v -ED, -ING, -S]

Medical Definition of Invalid

1. 1. Weak; sick. 2. A person partially or completely disabled. Origin: L. In-neg. + validus, strong (05 Mar 2000)

Invalid Pictures

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Lexicographical Neighbors of Invalid

invalid (current term)

Literary usage of Invalid

Below you will find example usage of this term as found in modern and/or classical literature:

1. United States Supreme Court Reports by Lawyers Co-operative Publishing Company, United States Supreme Court (1885)
"But if there be any sound reason for holding a policy invalid when taken out by a party who has no interest in the life of the assured, it is difficult to ..."

2. An Autobiography by Herbert Spencer (1904)
"APPENDIX D. [An account of the invalid-bed, as given by the "British Medical ... A NEW invalid-BED. There is now on view at the establishment of Mr. Ward, ..."

3. Supreme Court Reporter by Robert Desty, United States Supreme Court, West Publishing Company (1920)
"Whether the order was based on a valid or an invalid statute consequently has become merely a moot question. [2] In this situation we are not called up- к ..."

4. South Eastern Reporter by West Virginia Supreme Court of Appeals, West Publishing Company, South Carolina Supreme Court (1922)
"Counties (g=35( 1,3)— Order for election on removal of county site should not specify proposed new site; election invalid when place specified; ..."

5. The Catholic Encyclopedia: An International Work of Reference on the by Charles George Herbermann (1913)
"As regards marriage with an infidel, the early Church did not consider such unions invalid, especially when a person had been converted to the faith after ..."

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