indefensibility.

The inability of a position or action to be justified or supported by reasonable arguments.

Use it for

Words that belong together

• the indefensibility of a policy
• moral indefensibility

On the page

The report established the policy's indefensibility without claiming that its authors had acted maliciously.

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. Writing functions: evaluation. Commonness: moderately common.