Artificial intelligent assistant

occultness

oˈccultness
  [f. as prec. + -ness.]
  The quality or state of being occult.

1727 Bailey vol. II, Occultness, hiddenness, concealedness. 1755 in Johnson. 1875 Masson Wordsw., etc. 280 Consisting in a certain unusual degree of richness..exquisiteness..occultness, grandeur, or passionateness.

Oxford English Dictionary

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