Artificial intelligent assistant

unassignable

unaˈssignable, a.
  (un-1 7 b.)
  Hence, in recent use, unassignability.

1674 N. Fairfax Bulk & Selv. 62, I see this roomthiness in the whole, must as well have unassignable parts or such as cannot be laid out. 1780 T. Twining in R. Twining Recreat. & Stud. (1882) 76 In gracing, he does the most beautiful, most unassignable..things I ever heard. 1780 Bentham Princ. Legisl. xii. §15 Such party may be either an assignable individual..or else a multitude of unassignable individuals. 1883 Sir. E. E. Kay in Weekly Notes 15 Dec. 212/1 A vested reversionary interest subject to a life interest in leasehold property..[is] not an unassignable possibility.

Oxford English Dictionary

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