do somebody a disservice

do (one) a disservice

To do something that hinders or is detrimental to one. You'll really do your kids a disservice if you cater to their every whim.
See also: disservice
Farlex Dictionary of Idioms.

do somebody a disˈservice

do something that harms somebody and the opinion that other people have of them: The minister’s comments do teachers a great disservice.
See also: disservice, somebody
Farlex Partner Idioms Dictionary
See also:
  • disservice
  • do (one) a disservice
  • do (oneself or someone) an injustice
  • do yourself/somebody an injustice
  • injustice
  • do (one) no service
  • do (someone or oneself) no favors
  • do somebody no favours
  • a recipe for disaster
  • there's no fear of something