incontrovertibly.

In a way that cannot reasonably be disputed on the relevant grounds.

Use it for

Words that belong together

• incontrovertibly establish
• incontrovertibly show

On the page

The timestamp incontrovertibly established when the file had been created.

The documents incontrovertibly showed that the meeting occurred but did not reveal every motive behind it.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Invariable adverb; use more or most only where natural. 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 assessment, qualification, argument critique, assumption analysis. Disciplines: argumentation, logic, research interpretation, formal writing. Commonness: uncommon.