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Definition of invalidity

invalidity

/ˌɪn.vəˈlɪd.ə.ti/
in · va · lid · i · ty
Adverb:invalidly
•
Plural:invalidities
•
Adjective:invalid
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invalidity Lexical Profile

invalidity Game Scores & Validity

• noun

1

The state or quality of being logically, factually, or scientifically unsound.

Example

"The peer reviewers pointed out the methodological flaws that led to the invalidity of the study's conclusions."

2

The condition of having no legal force, authority, or binding effect.

Example

"The defense attorney argued for the invalidity of the contract because it had been signed under duress."

3

British The condition of being permanently disabled or unable to work due to chronic illness or injury, especially in the context of social security or pension benefits.

Example

"After the workplace accident left him unable to return to his job, he applied for an invalidity pension."

Synonyms
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Antonyms
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• Rhymes for invalidity

• Nearby Words

invalid
invalidate
invalidation
invalidity
invalidly
invaluable
invaluably

Word Origin & Etymology

Derived from the Latin adjective 'invalidus', meaning 'weak, feeble, or inadequate', combined with the noun-forming suffix '-ity'.

Cite this Entry

Wordmom. (2026). Definition of Invalidity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/invalidity
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