Artificial intelligent assistant

undervassal

ˈunderˌvassal
  (under-1 6 a.)

1594 [see underfee]. 1611 Cotgr., Arriere-vassal, an vnder-vassall. 1918 Times' Lit. Suppl. 21 Mar. 135/2 Legal reforms which protected the under-vassals from the arbitrary use of seignorial jurisdictions.

Oxford English Dictionary

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