to flog a dead horse
01
to waste time and energy on something that cannot be changed or revived
Dialect
British
British
![to [flog] a dead horse definition and meaning](https://cdn.langeek.co/photo/40835/original/?type=jpeg "to [flog] a dead horse definition and meaning")
أمثلة
Once the match ended 5–0, continuing the debate about tactics was simply flogging a dead horse.
to waste time and energy on something that cannot be changed or revived
British
