他对权贵的阿谀奉承让在场所有人都感到尴尬。

His obsequiousness towards the powerful made everyone in the room uncomfortable.

obsequiousness 是名词，由形容词 obsequious（谄媚的）加上名词后缀 -ness 构成。obsequious 来自拉丁语 obsequi（顺从），指过分谄媚或卑躬屈膝的态度。obsequiousness 表示"阿谀奉承的行为或特质"。