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ex post

American  
[eks pohst] / ɛks ˈpoʊst /

adjective

  1. based on analysis of past performance (opposed to ex ante).


Etymology

Origin of ex post

1635–45; < Latin: from (what lies) behind, according to (what lies) behind

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The effects have been so strong that the Fed, in a heroic feat of ex post facto rationalization, has begun to think of asset prices as another transmission mechanism for its balance-sheet policy instrument.

From The Wall Street Journal Apr. 21, 2026

“This is a violation of the ex post facto clause of the constitution,” said Neama Rahmani, president of West Coast Trial Lawyers.

From Washington Times Feb. 10, 2023

As for the claim of ex post facto justice, Robert Jackson — the American prosecutor who believed aggression enabled all the other war crimes that followed — summed up the charge:

From Salon Jan. 7, 2023

"A greater ex ante national ownership of the design of fiscal trajectories could be balanced by a stronger ex post enforcement at EU level," he said.

From Reuters Oct. 10, 2022

Because Wayna Qhapaq had not actually married Washkar’s mother—the union was properly incestuous but not properly legitimate—the new Inka demanded that his mother participate ex post facto in a wedding ceremony with his father’s mummy.

From "1491" by Charles C. Mann

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