higher-up

I need to get approval from a higher-up before we can proceed with the project.

用法提示：这里 higher-up 作名词，表示‘上级’，指职位更高的人。

The higher-ups in the company decided to implement a new policy.

用法提示：这里 higher-ups 是复数形式，指‘高层管理者’或‘大人物’。

She complained to a higher-up about the unfair treatment.

用法提示：higher-up 作为可数名词，前面接冠词 a，表示‘一个上级’。