"unceremonious" in Chinese (Simplified)
无礼的草率的
Definition
做事突然，没有任何礼节或客套；直接且不拘小节。
Usage Notes (Chinese (Simplified))
常带有轻微贬义，形容粗鲁、唐突或不尊重社交礼节的行为。常见搭配有“unceremonious exit”（突然离开）、“unceremonious manner”（不拘礼节的方式）。不是俚语，但属于非正式表达。
Examples
His unceremonious departure surprised everyone.
他**无礼地**离开让大家感到惊讶。
They gave an unceremonious response to her suggestion.
他们对她的建议作出了**草率的**回应。
The meeting ended in an unceremonious way.
会议以一种**不拘礼节**的方式结束。
He was unceremoniously kicked out of the group.
他被**无礼地**赶出了小组。
Don’t mind his unceremonious manners—he’s just very direct.
别在意他**不拘礼节**的举止，他只是很直接。
The boss made an unceremonious announcement that left everyone speechless.
老板做了一个**突然**的宣布，让大家都说不出话来。