shī​lǐ

to lack etiquette

失礼 失禮 shī//lǐ
to lack etiquette verb + noun
to act discourteously; to breach proper etiquette or manners

I'm sorry I was rude; I take back what I said.

excuse me adjective
a polite expression used to apologize for one's own lack of manners or for not hosting a guest properly

It's rude to keep people waiting.

Frequency

Movie subtitles
4.83 per million appears in 2% of films
Written text
1.66 per million

Sources