Artificial intelligent assistant

prepunctual

preˈpunctual, a. rare.
  [f. pre- A. 5, 6 + punctual.]
  More than punctual; coming earlier than the appointed time. So prepunctuˈality, anticipative punctuality, the fact of arriving before the precise time; preˈpunctually adv., more than punctually.

1870 Helps in Macm. Mag. July 239/2 Our conjoint prepunctualities brought us to the station a good half-hour before the time. 1882 Society 9 Dec. 8/1 So far was prepunctuality..carried, that..Her Majesty was ten minutes before time. 1890 Cent. Dict., Prepunctual. 1894 Story of My Two Wives 110 We were at the agent's prepunctually.

Oxford English Dictionary

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