expression, i-adjective
Describes a person or behavior that lacks good manners; often used in social contexts to criticize etiquette.
電車の中で大声で話すのはマナーの悪い行為だ。
Talking loudly on the train is ill-mannered behavior.
彼はマナーの悪い客として店を追い出
He was kicked out of the store as a rude customer.