Artificial intelligent assistant

beleaguerer

beleaguerer
  (bɪˈliːgərə(r))
  [f. as prec. + -er1.]
  One who beleaguers: a besieger.

1628 Earle Microcosm. lxxvii. 159 He is a sore beleaguerer of chambers. 1817 Coleridge Zapolya ii. Wks. IV. 232 A wall, that wards off the beleaguerer.

Oxford English Dictionary

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