n.吹牛者，吹牛大王，自吹自擂者
adj.自夸自大的

He's such a braggart, always talking about his accomplishments at every opportunity.
他是个自大狂，总是抓住一切机会吹嘘自己的成就。
The braggart claimed to have won the marathon without any training.
那个爱吹牛的人声称自己没经过任何训练就赢得了马拉松比赛。
Despite her constant boasts, everyone knew the braggart had never even come close to climbing Everest.
尽管她不停地吹嘘，但人人都知道这个吹牛大王从未接近过攀登珠穆朗玛峰。
He walked into the party like a peacock, showing off and acting like a braggart.
他像一只开屏的孔雀走进派对，炫耀着，表现得像个自夸者。
The braggart's tales of bravery were amusing until he started taking credit for others' deeds.
那个吹牛者的勇敢故事本来挺逗人，直到他开始把别人的功劳据为己有。
Her constant bragging about her wealth made her come across as a braggart.
她不断吹嘘自己的财富，这让她显得很自负。
The braggart's boasts about his business prowess turned out to be nothing but hot air when the company went bankrupt.
当公司破产时，那个自夸者关于其商业才能的吹嘘被证明不过是空话。
I can't stand being around him; he's such a braggart, always exaggerating his achievements.
我受不了和他在一起；他是个自夸狂，总是夸大自己的成就。
The braggart's claims of knowing celebrities personally were quickly debunked when he couldn't provide any proof.
那个吹牛者声称与名人私交甚好，但很快就被揭穿，因为他拿不出任何证据。
It's tiresome how the braggart keeps talking about his luxurious vacations; nobody really believes him anymore.
那个自夸者不停地说着他奢华的度假经历，真是烦人；已经没人真信他了。