His immediate superior has singled him out for a special mention.

他的顶头上司专门提到他。

《柯林斯英汉双解大词典》

He leaned over backwards to please his immediate superior.

他拼命讨好他的顶头上司。

《新英汉大辞典》

She is my immediate superior.

她是我的顶头上司。

youdao

Mr Gabriele's body language in court sometimes betrayed tension, and when Monsignor Gaenswein - Pope Benedict's private secretary and his immediate superior - was giving evidence, the two mens' eyes never met.

BBC: Vatican trial: Verdict due for Pope's ex-butler Gabriele