auditor
noun
[ ˈɔːdɪtə ]
• a person who conducts an audit.
• "the company is required to appoint auditors at each general meeting"
• a listener.
• "so low was Deems's voice that his auditors had to give it close attention"
Origin:
Middle English: from Old French auditeur, from Latin auditor, from audire ‘to hear’.
