Artificial intelligent assistant

surreptive

suˈrreptive, a. Obs. rare—1.
  [ad. late L. surreptīvus = subreptīvus: see subreptive.]
  = surreptitious a.1 1.

1633 T. Stafford Pac. Hib. iii. i. 286 How may it then bee, that those [Apostolicall] Letters were surreptiue?

Oxford English Dictionary

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