To do more harm than good means to have a bad effect rather than a good one.
To make a situation worse rather than better.
To be damaging rather than helpful.
1. I’m sorry but saying anything at this point may do more harm than good.
2. Her boyfriend is doing more harm than good in her life.
3. I thought this cream would help with my dry skin but it’s doing more harm than good.
4. Everyone’s opinions and advice on how I should raise my child is doing more harm than good.
abuse, damage, detriment, disservice, hurt, ill, impair, impairment, inconvenience, infliction, loss, mess up, mischance, mischief, misfortune, misuse, put down, ruin, sabotage, undermine, vice, violence, wickedness, wreck, wrong