Artificial intelligent assistant

usuary

usuary Roman Law.
  (ˈjuːzjuːərɪ)
  [ad. late L. ūsuāri-us n., f. ūsuārius a., f. L. ūsus use n.]
  One who has the use but not the ownership of a thing.

1871 Poste Gaius iv. 507 As the usufrutuary has no possession, it follows a fortiori that the usuary has no possession.

Oxford English Dictionary

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