Artificial intelligent assistant

denull

deˈnull, v. Obs.
  [f. de- I. 3 + L. null-us none, null: cf. disnull, disannul.]
  trans. To reduce to nullity; to annul, make void.

1494 Fabyan Chron. vii. 402 After the deth of Kynge Edwarde that banysshement was soone denulled. 1552 Bury Wills (Camden) 141, I denull, disalow, and sett att nothing all former wills and testaments.

Oxford English Dictionary

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