Question

BrE: to try to continue discussing or arousing interest in something that already has been fully discussed or that is no longer of interest (use "horse")

Accepted Answer

Stop arguing! You have won your point! You're just flogging a dead horse. | There's no point in putting job-sharing on the agenda. We've already voted against it four times! Why flog a dead horse?

Front	BrE: to try to continue discussing or arousing interest in something that already has been fully discussed or that is no longer of interest (use "horse")
Back	Stop arguing! You have won your point! You're just flogging a dead horse. \| There's no point in putting job-sharing on the agenda. We've already voted against it four times! Why flog a dead horse?

Interest Dead Bre Continue Discussing Arousing Fully Discussed