Artificial intelligent assistant

dead-hearted

ˈdead-ˈhearted, a.
  Dead in feeling, callous, insensible. Hence dead-ˈheartedly adv.; dead-ˈheartedness.

1642 J. Eaton Honey-combe 378 Such dead-hearted, unbeleeving, and wrangling Sophisters. Ibid. 378 margin, Zealous against dead-heartednesse and unbeliefe. 1670 T. Brooks Wks. (1867) VI. 351 God will deliver you from..security..formality, dead-heartedness, lukewarmness. 1839 Standard 6 July, The callous dead-hearted sensualist.

Oxford English Dictionary

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