eyewitness.

Someone who personally saw an event happen.

Use it for

Words that belong together

• eyewitness account
• eyewitness testimony

On the page

No eyewitness could explain what had happened before the lights failed.

Usage notes

Primary category: analysis / argumentation / evidence. Forms: Singular eyewitness; plural eyewitnesses. 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. Commonness: moderately common.