big-headed
01
うぬぼれた, 傲慢な
having or displaying the belief that one is superior in intellect, importance, skills, etc.
例
After winning the competition, he became a bit big-headed, constantly boasting about his success.
コンテストで優勝した後、彼は少しうぬぼれが強くなり、常に自分の成功を自慢していた。
