unserious
US /ʌnˈsɪr.i.əs/
UK /ʌnˈsɪə.ri.əs/
形容词
不认真的, 轻浮的, 爱开玩笑的
not serious; frivolous or playful
示例:
•
His unserious attitude often got him into trouble at work.
他不认真的态度常常让他在工作中惹麻烦。
•
She made an unserious comment that lightened the mood.
她发表了一句不认真的评论，缓和了气氛。