Artificial intelligent assistant

tac-au-tac

tac-au-tac Fencing.
  (takotak)
  [F. tac-au-tac, lit. clash for clash, f. tac echoic word.]
  In tac-au-tac riposte, the return stroke after parrying with opposition: see quot. 1889 and riposte n. 1.

[1889 Pollock, etc. Fencing (Badm. Libr.) 75 [The riposte] may be delivered in two ways:..[secondly], quitting the steel after a clean, smart parry... This is called..the riposte du tac-au-tac.] 1907 Daily Chron. 20 Nov. 8/2 The retort was in the nature of the tac-au-tac riposte beloved of the skilled swordsman.

Oxford English Dictionary

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