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Synonyms

dead horse

American  

noun

  1. something that has ceased to be useful or relevant.

idioms

  1. beat / flog a dead horse, to persist in pursuing or trying to revive interest in a project or subject that has lost its usefulness or relevance.

dead horse More Idioms  

  1. see beat a dead horse.

Etymology

Origin of dead horse

An Americanism dating back to 1820–30

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.