Artificial intelligent assistant

somnific

somnific, a.
  (sɒmˈnɪfɪk)
  [ad. L. somnificus: see somni- and -fic.]
  Causing sleep; somniferous.

1721 Bailey, Somnifick, causing sleep. 1727 A. Hamilton New Acc. E. Indies I. xxiii. 278 Others again take somnifick Medicines, and stand by the Pile till they fall on it while asleep. 1775 S. J. Pratt Liberal Opin. cxxxvi. (1783) IV. 254 A somnific fit again overtook him,..and, in the next instant, he was snoring in his chair. 1819 Moore Diary VIII. 189, I agree with you that a great part of ‘Lara’ is very prosy and somnific. 1834 Southey Doctor (1848) 3 The voice, the manner, the matter,..were all alike somnific.

Oxford English Dictionary

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