fiat

noun fi·at \ ˈfē-ət , -ˌat , -ˌät ; ˈfī-ət , -ˌat \
Updated on: 19 Nov 2017

Definition of fiat

1 : a command or act of will that creates something without or as if without further effort
  • According to the Bible, the world was created by fiat.
2 : an authoritative determination : dictate
  • a fiat of conscience
3 : an authoritative or arbitrary order : decree
  • government by fiat

Examples of fiat in a Sentence

  1. He runs the company by fiat.

  2. the school principal issued a fiat that caps were not to be worn inside the school, and that was that

Recent Examples of fiat from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fiat.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of fiat

Latin, let it be done, 3rd singular present subjunctive of fieri to become, be done — more at be


FIAT Defined for English Language Learners

fiat

noun

Definition of fiat for English Language Learners

  • : an official order given by someone who has power : an order that must be followed


Law Dictionary

fiat

noun fi·at \ ˈfē-ˌät, -ˌat, -ət; ˈfī-ˌat \

legal Definition of fiat

1 : decree
2 : an authoritative but arbitrary order
  • a brazen act of judicial fiat
  • —L. H. Tribe


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