Artificial intelligent assistant

unconfirm

unconˈfirm, v.
  (un-2 3.)

1550 Bale Eng. Votaries ii. 66 Anselme intreated for hys dysgraded abbottes and vnconfirmed prelates, whyche was graunted foorthwith, and they restored to their dygnytees. 1598 Florio, Disconfermare, to vnconfirme, to disestablish. 1843 Carlyle Past & Pr. ii. ix, Long ages of..entirely confirmed Valethood—which will have to unconfirm itself again.

Oxford English Dictionary

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