do more harm than good

Verb

To make a situation worse, usually while trying to make it better.

Japanese Meaning

状況を改善しようとして、結果的に悪化させること / 善意で行った行動が逆効果となり、害が利益を上回ること

Adding harsh chemicals to the pond to kill algae might do more harm than good.

藻類を駆除するために池に強い薬剤を入れると、かえって害の方が大きくなるかもしれない。

Sense（1）

To make a situation worse, usually while trying to make it better.

does more harm than good

（ present singular third-person ）

doing more harm than good

（ participle present ）

did more harm than good

（ past ）

done more harm than good

（ participle past ）