for (one's) (own) good
For one's benefit, even though it may not be enjoyable or desirable. I know you're mad that I won't let you eat candy for dinner, sweetheart, but it's for your own good. I'm not surprised she's upset, but she has to understand that we're doing this for her own good. It will be hard, but you need to break up with Adam for your own good. Your relationship has just gotten way too toxic.
for good
1. Permanently; indefinitely; forever. After she found out about his latest relapse with drugs, she decided it was best to leave him for good. He got locked up again—this time for good. If you get caught cheating on the exam, the headmaster will kick you out for good!
2. For the benefit of others; for purposes that are pure and not evil. It's time you started thinking about using your wealth for good, instead of wasting it on pleasure. Every parent wants their kid to use their talents for good instead of evil. He's a ruthless dictator! I doubt he's ever done a single act for good in his life!
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.