1. 悔恨地,遗憾地：reject v. 陈述 | regrettably 悔恨地,遗憾地 | release v. 释放;发布;放开

2. 抱歉地：regrettable 可叹的 | regrettably 抱歉地 | regrind 再磨研

3. 遗憾地：regrettable 可惜的 | regrettably 遗憾地 | regrettably 可惜地

4. 可惜地：regrettably 遗憾地 | regrettably 可惜地 | regrind 磨配

七彩网·英语单词

adv

1. by bad luck

e.g. unfortunately it rained all day
alas, I cannot stay

Synonym: unfortunatelyunluckilyalas