Artificial intelligent assistant

killer-diller

killer-diller slang (orig. U.S.).
  (ˌkɪləˈdɪlə(r))
  [Rhyming reduplication of killer 7.]
  = killer 7. Also attrib. or as adj.

1938 Life 8 Aug. 56 The hot musician..shudders when he hears Benny Goodman announce his next radio number as a ‘killer-diller’. 1939 R. P. Dodge in Ramsey & Smith Jazzmen xv. 341 The fast ‘killer-diller’ arrangement. 1957 W. C. Handy Father of Blues x. 147 My old friend Wilbur Sweatman—a killer-diller and jazz pioneer. 1970 Melody Maker 3 Oct. 15/6 The inevitable concessions to the gallery made by the band in some of the more ‘killer-diller’ specialities.

Oxford English Dictionary

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