invalidity.

Failure to meet the standards needed for a conclusion, claim, or document to hold.

Use it for

Words that belong together

• legal invalidity
• invalidity of an inference

On the page

The missing signature raised questions about the contract's invalidity.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Usually uncountable; no ordinary plural in this sense. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.