() (about work or workers) not done regularly, or not doing sth regularly, but only when needed （指工作或工人）临时的，不定期的◆Students looking for casual work come to the coast in summer. 找临时工作的学生夏季来到海滨。◆They are employed on a casual basis(= they do not have a permanent job with the company). 他们受雇为临时工。SYNtemporary
not formal 非正式的；随便的◆We're supposed to wear casual clothes for the conference. 按说我们应当穿便装开会。
▸ˈcasually
adverb
◆Half their staff are employed casually. 他们有一半员工是临时雇来的。◆dressed casually in jeans and a sweater 随随便便地穿着牛仔裤和毛衣