Artificial intelligent assistant

fidele

fiˈdele, a. Obs.
  Also 6 fydell, 7 fidell.
  [a. F. fidèle, ad. L. fidēl-is, f. fidēs faith.]
  Faithful, sincere, true.

1539 Hen. VIII To Sir T. Wyatt 10 Mar. (R.), They were true and fidele unto us. 1545 T. Raynalde Byrth Mankynde R iv, He is one of the moost fydell & faithfullest Apothecaries in London. 1671 True Nonconf. 133 Our Lord..hath in his fidell discharge..fully defined the former. 1677 Gale Crt. Gentiles iii. Pref., An humble fidele mind.

Oxford English Dictionary

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