expression, godan verb (-ru)
weigh on one's mind; trouble one
Idiomatic expression meaning something is on one's mind, causing worry or concern. Often used when a problem or thought lingers and bothers someone.
試験の結果が心にかかって、昨夜はよく眠れなかった。
The exam results were weighing on my mind, so I couldn't sleep well last night.
彼の言葉がずっと心にかかっている。
His words have been troubling me ever since.