Artificial intelligent assistant

extenuity

exteˈnuity Obs. rare—1.
  [f. extenu-ate v. after tenuity.]
  Extreme fineness or subtility; concr. in pl.

1601 Holland Pliny (1634) II. 535 Making up the pourfils and extenuities of his lineaments [argutias voltus].

Oxford English Dictionary

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