威張 いばりくさっちゃう
ibarikusacchau

Godan Verb (ru)
Godan Verb (u)

The completive aspect (contracted form) - indicates completion or regret of 威張りくさる

1. To become overbearing; To become arrogant; To get carried away (with oneself); To become imposing (and regret it)

Completed Action
Colloquial