Artificial intelligent assistant

sleepifying

ˈsleepifying, ppl. a.
  [f. sleep n.]
  Inducing or causing sleep.

1662 J. Chandler Van Helmont's Oriat. 338 Why are not hot things judged to be alike Stupefactive and Dormitive or Sleepifying? 1695 T. Tryon Dreams App. 288 Madness is nothing but an Erring Sleepifying Power, because every Madman dreameth waking. 1835 Beckford Alcoba{cced}a & Batalha 4 The old Marquis of Marialva's most sleepifying dormeuse, which had been lent to him expressly for this trying occasion.

Oxford English Dictionary

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