incontrovertible.

Established too firmly to be successfully disputed.

Use it for

Words that belong together

• incontrovertible evidence
• incontrovertible fact

On the page

The timestamp provides incontrovertible evidence of the sequence.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Comparative more incontrovertible; superlative most incontrovertible when comparison is meaningful. 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, inference, qualification. Commonness: moderately common.