余念

プログレッシブ和英中辞典(第4版)

よねん【余念】

彼は研究に余念がない
He devotes himself completely [body and soul] to his research.／He is buried in his research work.

彼は銭勘定に余念がなかった
He thought of nothing but counting his money.

余念なく読書をしていた
She was 「absorbed in [intent on] her reading.

出典　小学館「プログレッシブ和英中辞典(第4版)」