1. 形容詞
   遺憾的
   後悔的, 懊悔的
   依依不捨的
   惋惜的, 哀惜的
   regretful about ...(事):
   對...後悔的
   對...懊悔的
   對...遺憾的
   對...依依不捨的
   regretful for ...(事):
   

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   同義字詞
   aching,agonized,anguished,bemoaning,bewailing,bitter,deploring,doleful,dolorous,funeral,grieving,heartbroken,lamentable,lugubrious,mournful,plaintive,plangent,rueful,sorrowful,sorry,wailing,weeping,woeful
   apologetic,compunctious,contrite,penitent,remorseful,repentant,rueful,sorry
   

例句

1. She gave a regretful little shrug.
2. I suppose it is a regretful thing.
3. Han became regretful of his proposal.
4. He still feels very regretful of that.
5. He'd broken away, but looked regretful .
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