unfalsifiability.

The inability of a claim to be shown false by any possible observation or test.

Use it for

Words that belong together

• the unfalsifiability of a claim
• a problem of unfalsifiability

On the page

The claim's unfalsifiability came from treating every possible outcome as confirmation.

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: evidence, evaluation, inference. Commonness: uncommon.