Artificial intelligent assistant

double-hearted

ˈdouble-ˌhearted, a.
  [see double a. 5.]
  Having a ‘double heart’; deceitful, dissembling.

1552 Latimer Serm. & Rem. (1845) 151 Double-hearted, speaking one thing with their tongues, and thinking another thing in their hearts. 1617 Hieron Wks. II. 160 Guilefull and double-hearted hypocrites. 1849 Hare Par. Serm. II. 227 In this doublefaced, doublehearted world.

  Hence double-ˈheartedness.

1571 Golding Calvin on Ps. xii. 3 This dubblehartednesse..maketh men dubbletunged. 1888 Heron Ch. Subapostolic Age i. i. 21 Doubleheartedness, guile, arrogance.

Oxford English Dictionary

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