to hit a raw nerve
01
デリケートな話題に触れる, 痛いところを突く
to mention or do something that causes someone to become upset or angry
idiom
informal
例
When she mentioned his ex-girlfriend, it struck a nerve and he became visibly upset.
お金についての彼の発言は、彼女にとってデリケートな話題に触れた。
