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beat a dead horse

biːt ə ded hɔrs

Animals
informal
intermediate
Literally:
To hit a horse that is already dead

What does "beat a dead horse" mean?

  1. To continue arguing or discussing something that has already been decided
  2. To waste effort on something that is already finished or hopeless

Examples

  • We've made our decision; stop beating a dead horse.
  • Bringing up that old argument is just beating a dead horse.
  • I know I'm beating a dead horse, but I still think we were right.

Origin

First appeared in the mid-19th century. A dead horse cannot be made to move no matter how much you beat it, making the effort pointless. British English uses 'flog a dead horse.'

How to use it

American English uses 'beat' while British English prefers 'flog.' Very common for telling someone to drop a topic that's been settled.

Similar expressions

flog a dead horse
waste your breath
pointless effort

Opposites

drop it
move on

Related idioms

  • kill two birds with one stone

    To accomplish two goals with a single action

  • let the cat out of the bag

    To reveal a secret accidentally

  • elephant in the room

    An obvious problem or issue that everyone is aware of but no one wants to discuss

  • don't count your chickens before they hatch

    Don't assume success before it actually happens

  • hold your horses

    To wait and be patient

  • fish out of water

    Someone who feels awkward or uncomfortable in a particular situation

Use it in a practice answer

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