Artificial intelligent assistant

intervenent

interˈvenent
  [irreg. f. intervene v. + -ent; the etymological form is intervenient.]
  = next.

1802 A. Browne Civ. Law & Law Admiralty (ed. 2) II. 428 The intervenent must give security by fidejussors, to ratify the acts of his proctor.

Oxford English Dictionary

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