1.
eyewitness; witness
A person who directly sees an event, especially a crime or accident, and can provide testimony about what they observed.
Related Words
Related:
目撃 (witnessing (noun/verb))
Related:
証人 (witness (legal))
Related:
目撃する (to witness)
Related:
証言 (testimony)
Related:
発見者 (discoverer)
Compare:
遭遇者 (person who encounters)