do no good

do no good

To not improve (something) or have no beneficial effect. You can get mad at me if you like, but it will do no good. Unfortunately, it seems the medication did no good against your father's illness.
See also: good, no
Farlex Dictionary of Idioms.

do no good

see under do any good.
See also: good, no
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • as good as it gets
  • do (one) a/the world of good
  • be in good shape
  • for good measure
  • be as good as new
  • be good for (someone or something)
  • be good for something
  • (one) (has) never had it so good
  • (as) good as new
  • as good as new