弱よわみに付つけ込こむ

expression, godan verb (-mu)

take advantage of someone's weakness; exploit a vulnerability

Used when someone deliberately exploits another person's weak point, often in a negative or manipulative way. The expression is a set phrase combining 弱み (weakness) and 付け込む (to take advantage of).

• 彼かれは人ひとの弱よわみに付つけ込こんで金かねを巻まき上あげる。

  He takes advantage of people's weaknesses to swindle money out of them.

• 弱よわみに付つけ込こむような真似まねはやめてください。

  Please stop doing things like exploiting people's vulnerabilities.