Definition of flog a dead horse
1 : to keep talking about a subject that has already been discussed or decided I don't mean to flog a dead horse, but I still don't understand what happened.
2 : to waste time and effort trying to do something that is impossible Is it just flogging a dead horse to ask for another recount of the votes?
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors