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cry over spilt milk

Cultural  

  1. To dwell pointlessly on past misfortunes: “I know you wish that you'd handled the project more efficiently, but there's no use crying over spilt milk.”

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.