a.
- 懊悔的；遺憾的；惆悵的[（+for/about）][+that]I am regretful for hurting her feelings.
我後悔傷害了她的感情。
衍生
ad.
regretfully
n.
regretfulness
regretful
KK:[rɪˈɡrɛtfǝl] DJ:[riˈɡrеtfǝl]