#hearer__listener__auditor  someone who listens attentively
  supertype:  perceiver__observer__beholder  a person who becomes aware (of things or events) through the senses
  member of:  audience
  subtype:  eavesdropper  a secret listener to private conversations
     subtype:  phone_tapper__phonetapper__tapper__wiretapper  someone who wiretaps a telephone or telegraph wire

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