casual /ˈkæʒəwəl/ adjective Learner's definition of CASUAL
1
always used before a noun : happening by chance : not planned or expected偶然的;碰巧的;意外的 2
[more casual; most casual] : designed for or permitting ordinary dress, behavior, etc. : not formal日常便服的;不拘礼节的 ◊ Casual days are days (such as casual Fridays ) when a company allows workers to dress in casual clothes.便装日(公司允许员工穿便装上班的日子)
3 [more casual; most casual]
a : done without much thought, effort, or concern随意的;漫不经心的 b : not involving a close or serious relationship随意的;不太当真的 c : having some interest but not a lot : not serious略有兴趣的;不是认真的 4
: happening at certain times but not on a regular basis临时的;不定期的
— casualness
noun [noncount]