ex post facto

== English == === Alternative forms === expost facto expostfacto === Etymology === From Latin ex (“from”) + post (“after”) + facto, ablative of factum (“deed”). In Latin, ex takes the ablative case, while post takes the accusative case. (See Wikipedia for a discussion of the grammatical form and usage of this phrase.) === Adjective === ex post facto (not comparable) Retroactive. (law) Formulated or enacted after some event, and then retroactively applied to it. ==== Related terms ==== ex post ==== Translations ==== === Adverb === ex post facto (not comparable) (law) By retroactive application of a law formulated or enacted after the deed in question. ==== See also ==== Ex post facto law on Wikipedia.Wikipedia