〜まじき
Formation
Meaning
Indicates that an action is strictly forbidden or absolutely unacceptable considering one's position, status, or the circumstances.
Note
A very formal and somewhat archaic expression with a strong tone of condemnation. It emphasizes that a certain action is absolutely inappropriate for someone in a specific role. It is most commonly found in fixed phrases like 'あるまじき' (unacceptable/unbecoming for) and '許すまじき' (unpardonable/unforgivable). It follows the dictionary form of verbs, but 'する' becomes 'すまじき'.
Examples
弱い者をいじめるなんて、学生にあるまじき行為だ。
Bullying the weak is an act unbecoming of a student.
患者の個人情報を漏らすとは、医者としてあるまじきことだ。
Leaking patients' personal information is something a doctor must never do.
あの政治家の発言は、国民の代表として許すまじき暴言だ。
That politician's remark is an unforgivable outburst for a representative of the people.
親を騙してお金を奪うなど、決して許すまじき犯罪である。
Deceiving one's parents to steal money is a crime that can never be forgiven.
これ以上罪のない人々を苦しめるなど、断じてすまじきことだ。
To make innocent people suffer any further is something that absolutely must not be done.
プロのスポーツ選手が八百長をするなど、スポーツ界にあるまじき事態だ。
Professional athletes engaging in match-fixing is an unheard-of situation in the sports world.