regretfully
/rɪˈɡretfəli/ 29GRERegretfully is when you're full of regret, like if you decided to stay home and your friends saw your crush at the dance.
adverb [方式副词]懊悔地，遗憾地；抱歉地
He shook his head regretfully.
他遗憾地摇了摇头。
单词造句:
He shook his head regretfully.
他遗憾地摇了摇头。