make a hash of something

make a hash of (something)

To ruin, bungle, or spoil something. I really made a hash of that project at work—I'm going to get fired for sure! I'm afraid the accounting department made a complete hash of these numbers. We'll need to tally the entire ledger again.
See also: hash, make, of
Farlex Dictionary of Idioms.

make a hash of something

INFORMAL
If you make a hash of a job or task, you do it very badly. The Government made a total hash of things and wasted a small fortune. She fumbled with the trolley and made a hash of stacking the food trays.
See also: hash, make, of, something
Collins COBUILD Idioms Dictionary, 3rd ed.

make a ˈmess/ˈhash of something/of doing something

(informal) do something very badly: We tried making some wine, but we made a mess of it (= it did not taste good). I made a complete hash of the whole exam.
See also: hash, make, mess, of, something
Farlex Partner Idioms Dictionary
See also:
  • address (one's) comments to (someone or something)
  • address comments or remarks to
  • address (one's) remarks to (someone or something)
  • be in it for
  • a run on (something)
  • a rush on (something)
  • be out of (one's) head
  • away from it all
  • (the) odds are against (something)
  • be at a disadvantage