Artificial intelligent assistant

lustrative

lustrative, a.
  (ˈlʌstrətɪv)
  [Formed as lustrate v. + -ive.]
  Pertaining to lustration, expiatory purification, or (jocularly) washing.

1875 Contemp. Rev. XXV. 256 The Saxon..expends his lustrative energies upon his street and stairway, but never thinks of washing his own shirt. 1883 Encycl. Brit. XV. 70/1 Puppets suspended and swinging in the air (oscilla) formed one way of using the lustrative power of the air. 1889 Edin. Rev. No. 345. 67 The numerous and minute lustrative prescriptions..always included Gentile pollution.

Oxford English Dictionary

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