Artificial intelligent assistant

purificative

purificative, a. rare.
  (ˈpjʊərɪfɪkeɪtɪv)
  [a. F. purificatif, -ive purificatory (14th c.), f. purifer to purify: see -ive.]
  = purificatory a.

1491 Caxton Vitas Patr. (W. de W. 1495) i. i. 3 b/2 The body is puryfyed and wasshyd by the nytree whyche is a spece of Salte puryfycatyff. 1611 Cotgr., Purificatif, purificatiue, purifying.

Oxford English Dictionary

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