braggart
🇺🇸
/ˈbræɡərt/
🇬🇧
/ˈbræɡət/
A person who constantly talks about their achievements or abilities in a way that is intended to impress others.
The braggart kept boasting about his skills, but no one believed him.
自慢家は自分のスキルについて絶えず自慢していたが、誰も彼を信じていなかった。