ADJ-GRADED
后悔的;懊悔的;遗憾的
If someone is rueful, they feel or express regret or sorrow in a quiet and gentle way.
例句
He shook his head and gave me a rueful smile...
他摇了摇头，遗憾地对我笑了笑。
'Our marriage was a mistake,' she said, looking rueful.
“我们的婚姻是个错误，”她说着，看起来懊悔不已。