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1. 悔恨的：rue 懊悔 | rueful 悔恨的 | ruefully 悲伤地

2. rueful的反义词

2. 抱憾的：academic degree 学术学位 | rueful 抱憾的 | overlook 忽视

3. 悲傷的,可憐的：rue 後悔 | rueful 悲傷的,可憐的 | rumble 隆隆聲

4. 后悔的,遗憾的：grateful 感激的;感谢的 | rueful 后悔的,遗憾的 | bashful 害羞的,羞怯的

1. 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.

    e.g. He shook his head and gave me a rueful smile...
           他摇了摇头，遗憾地对我笑了笑。
    e.g. ''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。

1. feeling or expressing pain or sorrow for sins or offenses

    Synonym: contriteremorsefulruthful