fiat.
An arbitrary or authoritative command or order to do something; an effectual decree.
Meaning & usage
An arbitrary or authoritative command or order to do something; an effectual decree.
A royal fiat.
A presidential fiat.
Authorization, permission or (official) sanction.
A government fiat.
To rule by fiat.
A warrant of a judge for certain processes.
An authority for certain proceedings given by the Lord Chancellor's signature.
(Pertaining to) fiat currency.
Where this word comes from
From Latin fīat (“let it be done”).
To make (something) happen.
To issue a fiat.
Where this word comes from
From Latin fīat (“let it be done”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.