礼れいを失しっする

expression, suru verb (special)

be impolite; be discourteous; fail to show proper respect

A formal, somewhat stiff expression used when someone's behavior lacks the respect or courtesy expected in a situation. Often used in negative or critical statements.

• 彼かれの態たい度どは明あきらかに礼れいを失しっしていた。

  His attitude was clearly discourteous.

• そのような発はつ言げんは礼れいを失しっするものだ。

  Such remarks are impolite.