Beat a dead horse
English
Meaning
To persist or continue far beyond any purpose, interest or reason. Examples "After having shown us three hours of instructional and safety videos, the inspector was simply beating a dead horse by telling us to buckle up as we got into the van." Sources Wiktionary
Equivalent idioms in other languages
This is how you express this idiom across languages and locales.
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- English
Flog a dead horse