- an infirm or sickly person.
- a person who is too sick or weak to care for himself or herself: My father was an invalid the last ten years of his life.
- Archaic. a member of the armed forces disabled for active service.
- unable to care for oneself due to infirmity or disability: his invalid sister.
- of or for invalids: invalid diets.
- (of things) in poor or weakened condition: the invalid state of his rocking chair.
- to affect with disease; make an invalid: He was invalided for life.
- to remove from or classify as not able to perform active service, as an invalid.
- British. to remove or evacuate (military personnel) from an active theater of operations because of injury or illness.
- to become an invalid.
Origin of invalid1
- not valid; without force or foundation; indefensible.
- deficient in substance or cogency; weak.
- void or without legal force, as a contract.
Origin of invalid2
Related Words for invalidbaseless, unscientific, untrue, irrational, inoperative, unreasonable, unsound, null, false, void, bad, wrong, peaked, down, debilitated, ill, disabled, sick, frail, ailing
Examples from the Web for invalid
Contemporary Examples of invalid
The Xinhua News Agency and pro-Beijing groups in Hong Kong say that PopVote is illegal and invalid.Massive Hong Kong Protest Calls for More Democracy
July 1, 2014
If the marriage was invalid, Grayson does not have to pay out a dime in alimony as opposed to a divorce.Congressman Accuses Wife Of Bigamy
April 29, 2014
But again, this is just another way to dismiss her point as invalid and irrelevant.Female Journalist Gets Rape Threats Over Comic Book Criticism
April 21, 2014
Step 4: Draft a bill to remove every statute signed by Obama because they are all invalid.Fringe Factor: 7 Easy Steps to Jailing Obama
January 5, 2014
Yet his deeds had a way of defying his purposes, and he left the White House as an invalid and perceived as a failure.A Noble Failure: Woodrow Wilson’s Presidency Considered
September 8, 2013
Historical Examples of invalid
Edward being an invalid, it was now time for him to retire to bed.Biographical Stories
Mrs. Beaumont, surely you don't think this gentleman an invalid?Tales And Novels, Volume 5 (of 10)
I really do hope that Arthur, also, will not be an invalid, poor fellow!Night and Morning, Complete
She was an invalid, he told me, and could not leave her room.The Green Satin Gown
Laura E. Richards
I have said that as far back as I can remember, she was an invalid.Ranald Bannerman's Boyhood
- a person suffering from disablement or chronic ill health
- (as modifier)an invalid chair
- suffering from or disabled by injury, sickness, etc
- to cause to become an invalid; disable
- (usually foll by out; often passive) mainly British to require (a member of the armed forces) to retire from active service through wounds or illness
Word Origin for invalid
- not valid; having no cogency or legal force
- logic (of an argument) having a conclusion that does not follow from the premises: it may be false when the premises are all true; not valid
Word Origin for invalid
1709, originally of disabled military men, from invalid (adj.1). Invalides is short for French Hôtel des Invalides, home for old and disabled soldiers in the 7th arrondissement of Paris.
"of no legal force," 1630s, from special use of Latin invalidus (see invalid (adj.1)).
- One who is incapacitated by a chronic illness or disability.
- Incapacitated by illness or injury.