adj.自命不凡的，傲慢的，骄横的，自以为了不起的

His bumptious attitude quickly alienated him from his colleagues.
他傲慢自大的态度很快使他与同事们疏远了。
The bumptious young executive thought he knew better than everyone else in the room.
那位傲慢的年轻高管自以为比在场的所有人都要高明。
Her bumptious entry into the party disrupted the otherwise peaceful atmosphere.
她傲慢无礼地闯入聚会，扰乱了原本宁静的气氛。
The bumptious tourist demanded special treatment, oblivious to the annoyance he was causing.
那个傲慢的游客要求特殊待遇，对他的行为给别人带来的烦恼浑然不觉。
Despite his bumptious demeanor, he lacked the skills necessary to succeed in the industry.
尽管他态度傲慢，但他缺乏在这个行业中取得成功所必需的技能。
The bumptious new hire assumed he would be promoted within months, much to the amusement of his more experienced coworkers.
那位傲慢的新员工以为自己几个月内就会得到晋升，这让他的经验更丰富的同事感到好笑。
His bumptious behavior at the meeting was seen as disrespectful by many of the attendees.
他在会议上的傲慢行为被许多参会者视为不尊重他人。
She tried to tolerate her cousin's bumptious comments, but eventually she had to confront him about it.
她尽力容忍表弟那些傲慢的言论，但最终还是不得不与他正面交涉。
The bumptious celebrity's constant demands for attention grew tiresome for those around him.
那位傲慢的名人不断要求关注的行为让周围的人感到厌烦。
It was clear that the bumptious intern believed himself to be above the mundane tasks assigned to him.
很明显，那位傲慢的实习生认为自己高人一等，不愿做分配给他的平凡任务。