1. 形容詞
   隨便的, 漫不經心的
   輕鬆愉快的, 無憂無慮的
   心情愉快的, 快樂的
   

   同義字詞
   blithe,carefree,debonair,devil-may-care,gay,happy-go-lucky,insouciant,lightsome,unconcerned
   

例句

1. It was a lighthearted joke .
2. All that is not lighthearted material.
3. She forced herself to smile, to be lighthearted .
4. Work and workplaces that are fun and lighthearted .
5. Good content, lighthearted presentation in cartoons.
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