Artificial intelligent assistant

stony-hearted

stony-hearted, a.
  (ˌstəʊnɪˈhɑːtɪd)
  Having a stony heart; cruel, unfeeling, merciless.

1569 T. Underdown Heliodorus vii. 93 There is no man so stoany harted, but he shal be made to yeelde with our flatteringe allurmentes. 1596 Shakes. 1 Hen. IV ii. ii. 28 The stony-hearted Villaines. 1603 Knolles Hist. Turks (1638) 44 For who was so stony hearted; whom his sweet words and abundant teares..might not haue moued. 1822 De Quincey Opium Eater i. (1903) 183 So then, Oxford Street, stony-hearted stepmother,..at length I was dismissed from thee! a 1851 D. Jerrold St. Giles xv. 150 His coarse and stony-hearted brethren at the bar.

  Hence stony-ˈheartedness.

1673 Hickeringill Greg. F. Greybeard 258 They are so rooted in pride, stony heartedness and opinion of themselves. 1888 Voice (N.Y.) 19 Jan. 5 Mayor Chapin..refuses to perform the marriage ceremony... His stony-heartedness will blight the joy of many an intending Brooklyn couple.

Oxford English Dictionary

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