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flog a dead horse

flɑɡ ə ded hɔrs

Animals
informal
intermediate
Literally:
To whip a horse that has died

What does "flog a dead horse" mean?

  1. To waste effort on something that is already finished or settled
  2. To continue an argument that has already been resolved

Examples

  • The decision is made—you're flogging a dead horse.
  • Stop flogging a dead horse and move on.
  • Revisiting that argument is just flogging a dead horse.

Origin

From the mid-19th century. British version of 'beat a dead horse.' A dead horse won't move regardless of effort, making the flogging pointless.

How to use it

British English; Americans prefer 'beat a dead horse.' Both mean continuing futile efforts.

Similar expressions

beat a dead horse
waste of time
pointless effort

Opposites

productive effort
worthwhile pursuit

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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