listener Synonyms

auditor hearer monitor observer attender attendee listener-in witness watcher viewer supervisor patron student pupil spectator sounding-board receiver copycat onlooker close handler auditors monitors eaves-dropper hearers radio listener heeder event handler concertgoer audiophile snoop invigilator obeyer conformist conformer conclusion bystander bookworm beholder audient audience attendant annihilator amateur adviser conservative crowd follower looker lister inquirer