auditor (n.)

• accountant
• acquirer
• actuary
• addressee
• audience
• autodidact
• beholder
• boatswain
• bookkeeper
• boss
• bursar
• calculator
• cashier
• chamberlain
• chief
• clerk
• comptroller
• consignee
• controller
• curator
• depositary
• depository
• eavesdropper
• educatee
• floorwalker
• foreman
• gaffer
• ganger
• getter
• head
• headman
• hearer
• holder
• inquirer
• inspector
• learner
• liquidator
• listener
• looker
• monitor
• overseer
• payee
• paymaster
• prefect
• proctor
• procurer
• pupil
• purser
• receiver
• recipient
• reckoner
• recorder
• registrar
• scholar
• sirdar
• snoop
• spectator
• steward
• student
• super
• superintendent
• supervisor
• surveyor
• taker
• taskmaster
• trainee
• treasurer
• trustee
• viewer
• visitor