Artificial intelligent assistant

excrescentitious

excrescenˈtitious, a. rare—1.
  (ɛkskrɛsənˈtɪʃəs)
  [badly f. excrescent + -itious; after adventitious.]
  Of the nature of an excrescence.

1833 New Monthly Mag. XXXVIII. 189 This wart on the ‘great wen’ is as distinct and excrescentitious as if, etc.

Oxford English Dictionary

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