witnesser

Từ điển WordNet v3.1 - WordNet Dictionary

noun

someone who sees an event and reports what happened
• Syn:
witness, informant
• Derivationally related forms:
inform (for: informant), witness, witness (for: witness)
• Hypernyms:
perceiver, percipient, observer, beholder, speaker,
talker, utterer, verbalizer, verbaliser
• Hyponyms:
attester, attestant, testifier, deponent, deposer