ex post facto

adverb
ex post fac·​to | \ ˌeks-ˌpōs(t)-ˈfak-(ˌ)tō How to pronounce ex post facto (audio) \

Definition of ex post facto

 (Entry 1 of 2)

: after the fact : retroactively

ex post facto

adjective

Definition of ex post facto (Entry 2 of 2)

: done, made, or formulated after the fact : retroactive ex post facto approval ex post facto laws

Did you know?

Ex post facto is Latin for "from a thing done afterward". Approval for a project that's given ex post facto—after the project already has been begun or completed—may just have been given in order to save face. An ex post facto law is one that declares someone's action to be criminal only after it was committed--a procedure forbidden by our Constitution.

Examples of ex post facto in a Sentence

Recent Examples on the Web: Adjective Conyers argued that using the amendment in her case violated the ex post facto law outlined in the U.S. Constitution. Miriam Marini, Detroit Free Press, 10 June 2022 Most sophisticated financial services firms already have an existing data model—typically used for ex post facto data extraction—which is loaded into Arteria. Tom Davenport, Forbes, 17 May 2022 Right now, verification technology is ex post facto, generating reports for the marketer once their campaign has already run. Alok Choudhary, Forbes, 28 Jan. 2022 This process is meant to focus regulators’ efforts on large rather than small transactions, in addition to giving companies some assurance that their deal won’t be upended ex post facto. Rachel Chiu, National Review, 25 Oct. 2021 According to the International Carbon Action Partnership, an intergovernmental climate-policy monitoring group, the nominal cap will be adjusted ex post facto based on actual power-production levels. Jordan Mcgillis, National Review, 30 Aug. 2021 Facing facts and eschewing euphemisms, the U of L coach spent much of his post-season media de-briefing managing expectations on an ex post facto basis. Tim Sullivan, The Courier-Journal, 15 Mar. 2021 So many shows rely on studio interviews or guests recapping their adventures ex post facto — the equivalent of Aunt Jane prattling on about her trip to Tuscany over the phone. Washington Post, 11 Dec. 2020 Any future decisions about sealants can certainly be applied ex post facto. Caroline Delbert, Popular Mechanics, 29 May 2020 See More

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

First Known Use of ex post facto

Adverb

1621, in the meaning defined above

Adjective

1787, in the meaning defined above

History and Etymology for ex post facto

Adverb

Late Latin, literally, from a thing done afterward

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Time Traveler for ex post facto

Time Traveler

The first known use of ex post facto was in 1621

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Dictionary Entries Near ex post facto

ex post

ex post facto

expostulate

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Statistics for ex post facto

Cite this Entry

“Ex post facto.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ex%20post%20facto. Accessed 1 Jul. 2022.

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More Definitions for ex post facto

ex post facto

adverb
\ ˈeks-ˌpōst-ˈfak-tō How to pronounce ex post facto (audio) \

Legal Definition of ex post facto

 (Entry 1 of 2)

: after the fact : retroactively cannot judge ex post facto

ex post facto

adjective

Legal Definition of ex post facto (Entry 2 of 2)

1 : done, made, or formulated after the fact : retroactive
2 : of or relating to an ex post facto law the chief concerns of the ex post facto ban— L. H. Tribe

History and Etymology for ex post facto

Adverb

Late Latin, literally, from a thing done afterward

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