Part of speech: noun

An authoritative command.

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Usage examples "fiat":

  1. When an autocrat has delivered his fiat, argument on the part of even his most trusted servants is useless. - "The Intriguers", William Le Queux.
  2. To- day, by the fiat of madness, we are plunged in distress and threatened with political ruin, anarchy, and annihilation. - "The American Union Speaker", John D. Philbrick.
  3. It is as smooth as the motion of a ship sailing on a calm sea, and yet it is never fiat nor tame. - "The Life of Froude", Herbert Paul.