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invalid
1[ in-vuh-lid ]
noun
- an infirm or sickly person.
- a person who is too sick or weak to take care of their own needs:
My father was an invalid the last ten years of his life.
- Archaic. a member of the armed forces disabled for active service.
adjective
- 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.
verb (used with object)
- 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.
verb (used without object)
- to become an invalid.
invalid
2[ in-val-id ]
adjective
- not valid; not founded in truth, fact, or logic, and hence weak and indefensible; unsound; untenable:
The entire argument depends on an invalid assumption.
Synonyms: incorrect, inaccurate, false, erroneous, unsubstantiated, unfounded, groundless, baseless
- deficient in effectiveness; inadequate:
Self-perception is an invalid method of judging one's own biases.
- void or without legal force, as a contract:
Without the grandfather clause, thousands of such warranties would now be invalid. The coupon is invalid in our state.
Synonyms: null and void
- not accepted or permitted because a required element or the necessary form is lacking; not usable:
Anything with fewer than five characters is an invalid password, and you’ll get an error message prompting you to pick something more secure.
invalid
1/ ɪnˈvælɪd; ˌɪnvəˈlɪdɪtɪ /
adjective
- 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
invalid
2/ ˈɪnvəˌliːd; -lɪd /
noun
- a person suffering from disablement or chronic ill health
- ( as modifier )
an invalid chair
adjective
- suffering from or disabled by injury, sickness, etc
verb
- to cause to become an invalid; disable
- usually foll by out; often passive to require (a member of the armed forces) to retire from active service through wounds or illness
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Usage
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Derived Forms
- inˈvalidly, adverb
- invalidity, noun
- ˌinvaˈlidity, noun
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Other Words From
- in·val·id·ly adverb
- in·val·id·ness noun
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Word History and Origins
Origin of invalid1
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Word History and Origins
Origin of invalid1
Origin of invalid2
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Example Sentences
The Xinhua News Agency and pro-Beijing groups in Hong Kong say that PopVote is illegal and invalid.
If the marriage was invalid, Grayson does not have to pay out a dime in alimony as opposed to a divorce.
But again, this is just another way to dismiss her point as invalid and irrelevant.
Step 4: Draft a bill to remove every statute signed by Obama because they are all invalid.
Yet his deeds had a way of defying his purposes, and he left the White House as an invalid and perceived as a failure.
The landlady had related the tragic history of the dead mother and the invalid aunt.
The officer, with less delicacy of attention to the supposed slumbers of an invalid, followed him.
Nowadays, however, the latter was somewhat of an invalid, and seldom left their London house in Hill Street.
Suffering from paralysis for years previous, his mental energy, as a chronic invalid, was amazing.
It must not be that a man so good, so kind, so altogether faithful to us all should be an invalid forever.
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