Artificial intelligent assistant

purgator

purˈgator
  [a. late L. purgātor a cleanser, agent-n. from L. purgāre to purge. Cf. F. purgateur (16th c.).]
  A purifier.

1711 Hickes Two Treat. Chr. Priesth. (1847) II. 197 He..is our great purgator in the primary and most principal sense of the word. 1933 K. Malone Deor 15 He conceded the possibility that ‘ll. 31–34 may be a later insertion, made to give the whole a religious turn’, but evidently had his doubts about yielding even these lines to the purgator.

Oxford English Dictionary

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