certitude.

A strong, settled conviction that leaves little room for doubt.

Use it for

Words that belong together

• moral certitude
• air of certitude

On the page

He spoke with a certitude the records did not support.

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: uncommon.