Artificial intelligent assistant

impleader

imˈpleader Obs.
  [f. implead v. + -er1.]
  One that impleads, sues, or prosecutes another; a prosecutor, accuser, or impeacher.

a 1577 Sir T. Smith Commonw. Eng. (1633) 109 In all judgements being two parties, the first we call the impleader, suiter, demander or demandant or plaintife. 1698 S. Clarke Script. Just. iii. 13 Who is my adversary? (my impleader, or he that enters an Action against me). 1770 Hist. Duelling 3 (T.) The Gombette law..allowed the expedient of duelling to those impleaders, whom the administered oath to offenders did not sufficiently satisfy.

Oxford English Dictionary

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