心こころを用もちいる

expression, ichidan verb

pay attention to; be attentive to; take care with

A somewhat formal or literary expression meaning to direct one's mind or care toward something, often with a nuance of deliberate effort.

• 細さい部ぶに心こころを用もちいることが大たい切せつだ。

  It is important to pay attention to the details.

• 彼かれは言こと葉ば遣づかいに心こころを用もちいている。

  He is careful with his choice of words.