ex post facto clause

noun, often capitalized E&P&F&C

Legal Definition of ex post facto clause

: the clause in Article I, Section 9 of the U.S. Constitution forbidding Congress from passing any ex post facto laws

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ex post facto

ex post facto clause

ex post facto law

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Cite this Entry

“Ex post facto clause.” Merriam-Webster.com Legal Dictionary, Merriam-Webster, https://www.merriam-webster.com/legal/ex%20post%20facto%20clause. Accessed 28 Sep. 2022.

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