礼儀 れいぎ らっちゃう
reigi shira' chau

Godan Verb (u)
na-Adjective
no-Adjective

The completive aspect (contracted form) - indicates completion or regret of 礼儀知らず

1. To know manners (and regret it); To become aware of etiquette (and be inconvenienced)

Completed Action
Colloquial