regretfulness

Noun

uncountable

The state or condition of being regretful.

Japanese Meaning

後悔している状態 / 悔恨の念 / 遺憾な気持ち

His regretfulness was evident in every apology he offered after the meeting.

会議の後に謝るたびに、彼の後悔の念ははっきりと表れていた。

Sense（1）

The state or condition of being regretful.

Mervyn thought that he could detect a certain regretfulness in his companion's voice.