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彼の不作法な言葉遣いに驚いた。
I was shocked by his rude way of speaking.
a way of speaking that is impolite or lacking in proper etiquette
上司に向かってそんな不作法な言葉遣いをするな。
Don't speak to your boss in such a rude manner.
Often used to criticize someone's speech as socially inappropriate.
Use honorifics like です/ます in formal settings and avoid blunt or commanding language. For example, replace 「〜しろ」 with 「〜してください」.
不作法 (ぶさほう, impoliteness) + 言葉遣い (ことばづかい, way of speaking). 不作法 combines 不 (not) + 作法 (manners, etiquette).
Commonly used in contexts where someone's speech is deemed disrespectful or lacking social grace. Often appears in educational or workplace settings when correcting behavior.