Artificial intelligent assistant

counter-appellant

ˌcounter-aˈppellant
  [counter 3 b.]
  One who takes or makes a counter-appeal: in quot. applied to the eight Lords who in 1397 appealed of treason three of the Lords Appellants of 1387–8.

1874 Stubbs Const. Hist. III. 17 Of the appellants of 1388, only [Henry IV] himself and Warwick survived; of the counter-appellants of 1397, Nottingham and Wiltshire were dead.

Oxford English Dictionary

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