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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: , , , , , , ,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: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/ 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
invalid
2/ 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
Usage
Other 51Թ Forms
- invalidly adverb
- invalidness noun
- ˌԱˈ徱ٲ noun
- invalidity noun
- ˈ adverb
51Թ History and Origins
Origin of invalid1
51Թ History and Origins
Origin of invalid1
Origin of invalid2
Example Sentences
A referendum in Italy on easing citizenship rules and enhancing workers' rights has been declared invalid.
Settled in a working-class Los Angeles neighborhood, invalid parent and rebellious child clash: Anne “never so much as misted an eye when Louisa could see,” Choi writes.
The striker's legal team, however, now assert that the "gentleman's agreement" is invalid as the additional clause was never signed.
The suit argues that the designation of Chuckwalla was an invalid use of the Antiquities Act, and also claims the Antiquities Act itself is unconstitutional.
"Rather, they were imposed to punish Apple for purported non-compliance with an earlier state-law Injunction that is itself invalid," Apple wrote.
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