1 relaxed and not worried; not showing great effort or interest 漫不经心的: I'm not happy about your casual attitude to your work. 我不满意你那种漫不经心的工作态度。It was only a casual remark so I don't know why he got so angry. 我只不过随口说说，真想不通他为何大动肝火。

2 (used about clothes) not formal （指衣着）随便的: I always change into casual clothes as soon as I get home from work. 我下班回家以后总是立刻换上便服。

3 (used about work) done only for a short period; not regular or permanent （指工作）临时的: Most of the building work was done by casual labourers. 这座大厦的兴建工作大半由临时工承担。a casual job 临时工作；兼职工作 ➔casually /ˈkæʒuəli ||; ˈkæʒυəlɪ/ adv She walked in casually and said, ‘I'm not late, am I?’ 她从容不迫地走进来说﹕“我没迟到吧，对吗？”Dress casually, it won't be a formal party. 穿得随便一点，那不会是个正式的宴会。