失敬しっけい
JLPT: +
rudeness, impoliteness, disrespect, impertinence

Kanji:
Na-adjective, Noun, Suru verb
Example Sentences

葬式を干渉するのはひどく失敬なまねだ。
Interfering with a funeral is a great show of disrespect.

• • •

失敬な!
How rude!