Artificial intelligent assistant

testificator

testificator rare.
  (tɛˈstɪfɪkeɪtə(r))
  [Agent-n. in Latin form f. L. testificārī to testify: see -or.]
  One who testifies or attests; a testifier.

1730 in Bailey (folio). 1755 in Johnson. 1854 W. Waterworth Orig. Anglicanism 10 There has been..from the Apostolic days, an uninterrupted body of testificators.

Oxford English Dictionary

yu7NTAkq2jTfdvEzudIdQgChiKuccveC 3b0c2e10d34a4e49e3ef1cab6331ea50