weakness, vulnerability
弱みがあった
I had a weakness.
— ア・フュー・グッドメン (1992)
彼の弱みに付け込むのはやめなさい。
Stop taking advantage of his weakness.
ジョンはビルの弱みに付け込んだ。
John took advantage of Bill's weakness.
人の弱みに付け込むことはやめろよな。
Stop taking advantage of people's weaknesses.