Artificial intelligent assistant

invendible

invendible, a. rare.
  (ɪnˈvɛndɪb(ə)l)
  [in-3.]
  Not vendible; unsaleable. Hence inˌvendiˈbility, inˈvendibleness, unsaleableness.

1706 Phillips, Invendible,..unsaleable. 1727 Bailey vol. II, Invendibleness, unsaleableness. ? 17.. Brome To Rdr. (R.), The author may be laughed at, and the stationer beggared by the book's invendibility. 1789 Jefferson Writ. (1859) II. 566 It had already begun to render our oils invendible in the ports of France.

Oxford English Dictionary

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