Artificial intelligent assistant

unwriteable

unˈwriteable, a.
  (un-1 7 b.)

1780 T. Twining Recreat. & Stud. (1882) 76 In gracing, he does the most beautiful, most unassignable, most unwritten and unwriteable things I ever heard. 1801 Southey Let. to G. C. Bedford 19 Aug., These are unwriteable things—the gossip, and the playfulness. 1873 Earle Philol. Eng. Tongue (ed. 2) 110 The first [vowel] we call by an unwriteable name.

Oxford English Dictionary

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