be flogging a dead horse

be flogging a dead horse

To be continuing to focus on something, especially an issue or topic, that is no longer of any use or relevance. I don't know why you're flogging a dead horse—the rest of us have moved on from that problem.See also: dead, flog, horse

be flogging a dead horse

BRITISH or

be beating a dead horse

AMERICANIf someone is flogging a dead horse, they are wasting their time trying to achieve something that cannot be done. After putting in all that hard work it feels like we're flogging a dead horse — it's all very discouraging. You're beating a dead horse on this. These guys are defeated.See also: dead, flog, horse