Artificial intelligent assistant

deepmost

ˈdeepmost, a. rare.
  [f. deep a. + -most. Cf. topmost, inmost, etc.]
  Deepest.

1810 Scott Lady of L. ii. xx, From her deepmost glen. 1841 Lady F. Hastings Poems 233 Shout, echo! from thy deepmost cell.

Oxford English Dictionary

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