post factum

[pohst fak-tuh m]

adjective, adverb

after the fact; ex post facto: She will announce her decision and then give us a post factum statement of the reasons for it.

Origin of post factum

1685–95; < Latin: after (the) deed Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for post factum

Latin, literally "after the fact."

Online Etymology Dictionary, © 2010 Douglas Harper