Artificial intelligent assistant

hard-and-fastness

hard-and-ˈfastness
  The condition of being hard and fast; hard and fast character.

1903 Daily Chron. 5 Mar. 3/3 The ‘hard-and-fastness’ of experience. 1904 Westm. Gaz. 18 June 13/2 By denying the hard-and-fastness and asserting the strictly provisional character of the forms or categories.

Oxford English Dictionary

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