うぬぼれちゃう
自惚れちゃう
unuborechau

Ichidan Verb
Godan Verb (u)

The completive aspect (contracted form) - indicates completion or regret of うぬぼれる

1. Become self-absorbed; Become conceited; Fall in love with oneself

Completed Action
Colloquial
Usually Written in Kana