有害無益
Meanings
Noun
1. more harm than good; harmful and of no use (Yojijukugo)
Kanji used
Composed of
Examples5
この
This book will do you more harm than good.
喫煙
Smoking will do more harm than good.
言葉
A word spoken at the wrong time can do very much more harm than good.
運動
Exercise, if carried to excess, will do you more harm than good.
運動
Too much exercise can do more harm than good.