Artificial intelligent assistant

promiser

promiser
  (ˈprɒmɪsə(r))
  [f. promise v. + -er1. (See also promisor, promissor.)]
  One who or that which promises; the maker or giver of a promise.

1530 Tindale Answ. More iv. xi. Wks. (1573) 336/2 Faith..shall receaue according to the truth of the promiser. 1632 Massinger City Madam iii. ii, I must be A doer, not a promiser. 1771 E. Griffith Hist. Lady Barton II. 122 That sweet promiser Hope. 1775 Johnson Tax. no Tyr. 22 An idle promiser of kingdoms in the clouds. 1864 Realm 6 Apr. 2 We may always distrust the universal promiser.

Oxford English Dictionary

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