無ぶ礼れい千せん万ばん

Meanings

1

extremely rude; outrageously impolite

yojijukugo (four-character idiom)

A strong yojijukugo used to condemn behavior that is shockingly disrespectful or impertinent. Often used in formal or written contexts.

彼かれの態たい度どは無ぶ礼れい千せん万ばんだ。
His attitude is extremely rude.
そんな要よう求きゅうをするとは無ぶ礼れい千せん万ばんな話はなしだ。
Making such a demand is outrageously impolite.