bigheaded
adjective disapproving uk/ˌbɪɡˈhed.ɪd/ us/ˌbɪɡˈhed.ɪd/
自负的，傲慢的
thinking that you are more important or more intelligent than you really are
She's so bigheaded! 她自负得不得了！
Compare: swollen head
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。