失しっ敬けい千せん万ばんしっけいせんばんMeanings1na-adjectiveextremely rude; outrageously impoliteyojijukugo (four-character idiom)›A strong, formal yojijukugo used to condemn behavior as deeply disrespectful. Often found in written or formal speech.彼かれの失しっ敬