無作法

rude, impolite, ill-mannered

b ɯ̟ s a̠ h o̞ː → 無作法だ
無 nothingness, the void, nonexistence + 作 work (by someone), creation + 法 law
adjective Rare #35,131
rude, impolite, ill-mannered Often used for behavior that breaks social etiquette.
JA: 食事中に大きな音を立てるのは無作法です。
EN: It’s rude to make a lot of noise while eating.

食事中に音を立てるのは無作法です。

It is rude to make noises while eating.

日本人の中には無作法にみえると言っていいほどに、内気な人がいる。

Some Japanese people are so shy that it's fair to say they come across as rude.

部屋で帽子は無作法よ

Wearing a hat indoors is rude.

— ダーク・プレイス (2015)

彼はあんなに無作法にふるまったことを恥じている。

He is ashamed of having behaved so rudely.