Unacceptable Behavior: Using 〜まじき (Should Not)
〜まじき to describe behavior that is absolutely unacceptable given someone's professional or social status.
Grammar Rule in 30 Seconds
Use {まじき|まじき} to describe behavior that is fundamentally unacceptable or contrary to one's professional or social duty.
- Attach to the dictionary form of a verb: {許す|ゆるす}まじき.
- Used primarily with nouns like {行為|こうい} (act) or {態度|たいど} (attitude).
- Reserved for formal, critical, or literary contexts.
Overview
The Japanese grammar pattern 〜まじき delivers a powerful, formal condemnation of an action or attitude, deeming it profoundly unacceptable when measured against the duties of a specific role, profession, or social position. It is not a simple prohibition but a grave ethical judgment. Functioning as a pre-nominal adjective, it always modifies a noun, describing it as something that should not be or is fundamentally unbecoming.
Its essence lies in judging an act as a violation of one's expected station (立場, たちば [LHL]) or social standing (分際, ぶんさい [HLL]).
Rooted in classical Japanese (文語, ぶんご [HLL]), 〜まじき carries an authoritative, formal, and somewhat archaic tone, placing it firmly at the CEFR C2 level. Its use implies that an act is not merely wrong, but a betrayal of the very essence and responsibilities of the person involved. You will encounter まじき almost exclusively in formal discourse: news reports, legal documents, official apologies, and literature where moral weight is paramount.
It is virtually absent in casual conversation, where it would sound excessively dramatic and accusatory.
Think of 〜まじき as the direct antithesis of 〜べき (should do). While べき describes a positive obligation, まじき defines a negative one in the strongest terms. The most common and versatile form, あるまじき (あるまじき [LLHHHLL]), literally means "that which should not exist." When attached to nouns like 行為 (act) or 発言 (remark), it signifies a deep-seated societal disapproval, making it a critical tool for articulating nuanced moral indignation with expert precision.
Conjugation Table
| Form | Classical Name | Usage with する (to do) |
Modern Status & Meaning | ||||
|---|---|---|---|---|---|---|---|
| :--- | :--- | :--- | :--- | ||||
| 終止形 (Shuushikei) | まじ |
`{する | する}まじ` (するまじ [LHH]) | Rare but extant. Functions as a sentence-ender to make a powerful, formal declaration of prohibition or negative will ("shall not do"). It carries a solemn, literary weight. | |||
| 連体形 (Rentaikei) | まじき |
`{する | する}まじき{こと | こと}` (するまじきこと [LHHHLL]) | Primary modern usage. Functions as a pre-nominal adjective that directly modifies a noun ("an act that one should not do"). This is the form you must master. | ||
| 未然形 (Mizenkei) | まじ |
`{する | する}まじ` | Obsolete. Used with particles like ば. |
|||
| 連用形 (Ren'youkei) | まじく |
`{する | する}まじく` | Obsolete. Functioned as an adverb. | |||
| 已然形 (Izenkei) | まじけれ |
`{する | する}まじけれ` | Obsolete. Used with particles like ば or ど. |
|||
| 命令形 (Meireikei) | まじ |
`{する | する}まじ` | Obsolete. Never used. |
How This Grammar Works
〜まじき functions as a fossilized classical adjective that imbues a noun with a strong sense of ethical or moral unacceptability. Its linguistic power comes from its origin as an auxiliary verb (まじ) that negated the action of the main verb. By attaching to a verb's dictionary form, it essentially packages the verb's meaning into a quality that describes the following noun.許すまじき残虐行為 (an atrocity that should not be forgiven). Grammatically, まじき modifies 行為 (act). It takes the verb 許す (to forgive) and defines the 行為 as something that possesses the inherent quality of being unforgivable.行為 itself. The act is stained with the quality of "unforgivability."あるまじき (unbecoming), from the verb ある (to be/exist). A phrase like 教育者にあるまじき態度 (an attitude unbecoming of an educator) does more than say an educator shouldn't have that attitude. It declares the attitude itself to be a violation of the very essence and responsibility (役割, やくわり) of being an educator.まじき remains such a potent tool in formal discourse.Formation Pattern
〜まじき is simple and consistent. You attach まじき directly to the dictionary form (終止形) of a verb. The resulting Verb + まじき phrase then functions as a single adjectival unit to modify a subsequent noun.
Verb (Dictionary Form) + まじき + Noun
まじき Phrase | Example Noun | Full Phrase & Meaning |
言う (to say) | 言うまじき | 暴言 (violent remark) | 言うまじき暴言 (A violent remark that should not be uttered) |
見過ごす (to overlook) | 見過ごすまじき | 不正 (injustice) | 見過ごすまじき不正 (An injustice that must not be overlooked) |
する) | する (to do) | するまじき | こと (thing) | するまじき{こと} (Something one must not do) |
来る) | 来る (to come) | 来るまじき | 場所 (place) | 来るまじき場所 (A place one should not come to) |
ある) | ある (to be) | あるまじき | 行為 (act) | あるまじき行為 (An act that should not be; an unbecoming act) |
まじき is used with a limited set of verbs, typically those relating to fundamental actions (する), existence (ある), speech (言う), permission (許す), or moral failure (裏切る, 犯す). The nouns that follow are almost always abstract concepts denoting behavior, events, or statements, such as 行為 (act), 態度 (attitude), 発言 (remark), 振る舞い (behavior), 失態 (blunder), or 事件 (incident).
When To Use It
〜まじき to deliver a strong, objective condemnation of an action that violates the established standards of a role, profession, or social contract. It is reserved for serious impropriety and is not for trivial matters.- Violations of Professional or Social Roles: This is the most common context. It is used to condemn individuals who betray the trust and responsibility inherent in their position.
医師にあるまじき医療ミス: "A medical error unbecoming of a doctor."聖職者にあるまじき言動: "Words and deeds unbecoming of a cleric."親としてあるまじき児童虐待: "Child abuse that is an absolute betrayal of parenthood."
- Betrayal of Public Trust: When public figures, corporations, or organizations fail in their duty,
まじきexpresses the gravity of that failure from a societal perspective. 政治家にあるまじき汚職事件: "A corruption scandal unbecoming of a politician."報道機関にあるまじき情報操作: "Information manipulation unbecoming of a news organization."
- Acts of Extreme Immorality: For transgressions that are considered reprehensible on a basic human level, beyond any specific professional or social role.
人として許すまじき残虐行為: "A cruel act, unforgivable for any human being."決して犯すまじき罪: "A crime that must never, ever be committed."
- Formal and Literary Contexts: Due to its classical roots,
まじきelevates the tone of writing, lending it an air of authority and objective judgment. It is frequently used in newspaper headlines, official statements of apology, and historical narratives to underscore the seriousness of an event. 弊社の管理体制にあるまじき不手際が{ございまして}...: "There was a failing unbecoming of our company's management system..." (A key phrase in a formal corporate apology.)
Common Mistakes
〜まじき leads to several common errors for even advanced learners. Avoiding these is crucial for your usage to be authentic and effective.- Using It for Subjective Dislikes:
まじきis for objective, ethical breaches, not personal taste. Using it for minor preferences sounds absurd and pretentious. - Incorrect:
こんな味のラーメンは食べるまじきものだ。(This flavor of ramen is a thing one shouldn't eat.) - Correct (for dislike):
このラーメンは{ちょっと}口に合わないなあ。(This ramen doesn't really suit my taste.) - Correct (for professional standards):
これで金を取るとは、料理人としてあるまじき手抜きだ。(To charge money for this is shoddy work unbecoming of a chef.)
- Ending a Sentence with
まじき: As an attributive form (連体形),まじきmust be followed by a noun it modifies. It cannot end a predicate on its own. - Incorrect: `その発言は{あるまじき}。
- Correct:
その発言は{あるまじきものだ}。(That remark is an unbecoming thing.) - Correct (using rare conclusive
まじ):その発言は断じて許すまじ。(That remark is absolutely unforgivable. - very formal/literary)
- Overuse in Conversation: In everyday speech,
まじきsounds pompous and overly dramatic. It creates distance and can be perceived as an aggressive accusation. Reserve it for formal writing or speech on serious topics. - Unnatural (to a friend):
{また}寝坊？ 社会人にあるまじき行為だよ！(You overslept again? That's an act unbecoming of a working adult!) - Natural (to a friend):
社会人なんだから、時間は守らないとダメでしょ。(You're a working adult, you have to be on time.)
- Incorrect Verb Attachment: Always attach
まじきto the dictionary form of the verb. Any other form is a critical grammatical error. - Incorrect:
言いましてまじき,言わないまじき - Correct:
言うまじき
Contrast With Similar Patterns
〜まじき from other negative expressions is key to C2-level precision. Each carries a distinct nuance in tone, function, and context.〜まじき | 〜てはいけない | 〜べきではない | 〜べからず | 〜ものではない |教師にあるまじき態度 (Attitude unbecoming of a teacher) | 廊下を走ってはいけない (You must not run in the hallway) | 簡単に諦めるべきではない (You shouldn't give up easily) | 関係者以外立ち入るべからず (No entry for unauthorized personnel) | 人の悪口を言うものではない (One shouldn't speak ill of others) |〜てはいけない(Direct Prohibition): This states a rule or a direct command.ここでタバコを吸ってはいけないstates a fact.まじきwould be used to condemn the person if their role made the act especially egregious (e.g., a firefighter smoking next to gas canisters:消防士にあるまじき行為).〜べきではない(Negative Advice): This expresses what one ought not to do, based on logic, personal opinion, or general morality. It is a recommendation.まじきis not advice; it is a judgment passed on an act already committed or a state that exists, declaring it fundamentally wrong for the context.〜べからず(Archaic Command): This is a formal, written imperative, most often seen on signs (芝生に入るべからず- Do Not Enter the Lawn). It is an external command from an authority.まじき, in contrast, is an internal judgment of an act's unsuitability based on an internal set of ethics or role expectations.〜ものではない(General Truth): This expresses a widely-held social or moral truth.学生は勉強をおろそかにするものではない(Students are not supposed to neglect their studies). It is a general principle.まじきis used for a specific, egregious violation of that principle, such as学生にあるまじきカンニング行為(cheating, an act unbecoming of a student).
Real Conversations
You will almost never hear 〜まじき in a casual, spoken conversation. Its natural habitat is in formal, public-facing, or literary contexts where a serious moral judgment is being rendered. Here’s how it appears in the real world.
1. In News Media (Headlines and Reports):
Newspapers and news broadcasts use まじき to signal a major ethical lapse and add gravity to the report.
- Headline: 大臣、またもやあるまじき失言。野党は辞任を要求。
"Minister makes yet another unbecoming gaffe. Opposition demands resignation."
- News Anchor: 「今回の不祥事は、国民の信頼を預かる金融機関としてあるまじき事態であり、徹底的な調査が求められます」
"This scandal is a situation unbecoming of a financial institution entrusted with the public's trust, and a thorough investigation is demanded."
2. In Official Apologies (Press Conferences):
When a company or organization apologizes for a major failure, まじき is used to demonstrate that they understand the depth of their transgression against public or consumer trust.
- CEO at a press conference: 「この度は、食品を扱う企業としてあるまじき衛生管理の問題を引き起こし、消費者の皆様に多大なるご迷惑とご心配をおかけしましたことを、心よりお詫び申し上げます。」
"We sincerely apologize for causing a sanitation problem, an issue unbecoming of a company that handles food products, and for the great trouble and worry this has caused all of our consumers."
3. On Social Media (As a Reaction):
A person would not typically use まじき to describe their own life. Instead, they use it when reacting to or commenting on a news event, often with a tone of sharp criticism or disbelief.
- Tweet (sharing a news article about a political scandal):
これぞ正に「政治家にあるまじき行為」。税金をなんだと思ってるんだ。
"This is truly 'an act unbecoming of a politician.' What do they think our taxes are for?"
Progressive Practice
Move from simple recognition to nuanced application with these exercises.
1. Contextual Discernment Drill:
For each scenario, choose the most appropriate negative expression: 〜にあるまじき行為だ, 〜べきではない, or 〜てはいけない.
- Scenario A: A police officer is caught fabricating evidence.
Answer: 警察官にあるまじき行為だ (strong condemnation of a role violation)
- Scenario B: A sign in a museum next to a priceless vase.
Answer: お手を触れてはいけない (a direct, impersonal rule)
- Scenario C: Your friend is considering lying on their resume to get a job.
Answer: 経歴を偽るべきではない (personal moral advice)
2. Sentence Transformation:
Rewrite the following simple statements into formal, condemnatory sentences using 〜まじき.
- Original: 「その裁判官は被告から賄賂を受け取った。絶対にダメなことです。」
- Transformed: 裁判官が被告から賄賂を受け取ったことは、法の番人としてあるまじき行為だ。
(The fact that the judge accepted a bribe from the defendant is an act unbecoming of a guardian of the law.)
3. Formal Writing Prompt:
Draft a three-sentence formal statement for a university website responding to a professor's discriminatory remarks in class. You must use the phrase 教育者にあるまじき発言.
- Example Response: この度の本学教員による授業中の不適切な発言に対し、被害を受けた学生の皆様に深くお詫び申し上げます。これは教育者にあるまじき発言であり、断じて許されるものではありません。本学は事態を重く受け止め、当該教員の厳正な処分を検討してまいります。 (We deeply apologize to all students affected by the recent inappropriate remarks made by a faculty member. These were remarks unbecoming of an educator and are absolutely inexcusable. The university takes this situation very seriously and will consider strict disciplinary action for the faculty member in question.)
Quick FAQ
- Q1: Can I use
〜まじきin a work email? - A1: It is almost certainly a bad idea. This expression is far too strong and accusatory for typical business communication, which prioritizes harmony (
和, わ). Using it would be seen as a direct, aggressive attack on a colleague's character. It is reserved for situations of extreme gravity, like public apologies or legal statements, not for critiquing a colleague's work.
- Q2: What is the difference between
許すまじきand許すべきではない? - A2:
許すべきではないis advice or a moral opinion suggesting one ought not to forgive something. It leaves room for debate.許すまじきis a stronger, more absolute judgment that defines the act itself as being inherently outside the realm of what can be forgiven. It is a declaration, not a suggestion.
- Q3: Does
まじきalways sound negative? - A3: Yes, its function is exclusively to condemn. It is used to describe something as unacceptable or unbecoming. There is no positive or neutral usage. Its presence in a sentence immediately signals a serious ethical criticism.
- Q4: Is
まじ(the conclusive form) common? - A4: No, it is quite rare in modern Japanese and sounds very archaic or literary. You might see it in historical dramas or literature where a character makes a solemn vow, e.g.,
二度とこの地は踏むまじ("I shall never set foot on this land again."). For practical, modern C2-level communication, you should focus entirely onまじき.
- Q5: Why is
あるまじきso much more common than other verbs withまじき? - A5: Because it's the most versatile and abstract. It allows you to condemn any noun—an act (
行為), attitude (態度), statement (発言), etc.—as something that simply "should not exist" in the context of a person's role (〜として). This makes it a powerful and broadly applicable phrase for ethical criticism. It functions almost as a fixed compound adjective (連体詞, れんたいし), making it easy to deploy in formal condemnations.
Formation Table
| Verb Form | Construction | Example |
|---|---|---|
|
Dictionary
|
Verb + まじき + Noun
|
あるまじき行為
|
|
Negative
|
N/A
|
N/A
|
|
Polite
|
N/A
|
N/A
|
Meanings
Used to express that an action or attitude is inappropriate, unacceptable, or contradictory to the role or status of the person involved.
Professional/Moral Prohibition
Expressing that an action is incompatible with one's role.
“教員としてある{まじき|まじき}発言。”
“プロとして{許す|ゆるす}まじきミス。”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
Verb(dict) + まじき + Noun
|
あるまじき態度
|
|
Negative
|
N/A
|
N/A
|
|
Question
|
N/A
|
N/A
|
|
Past
|
N/A
|
N/A
|
Formality Spectrum
教師としてあるまじき行為です。 (Professional critique)
教師としてあるまじき行為だ。 (Professional critique)
教師としてありえない。 (Professional critique)
教師失格。 (Professional critique)
Majiki Usage Map
Context
- Formal Formal
- Critical Critical
Collocation
- 行為 Act
- 態度 Attitude
Examples by Level
それはダメです。
That is not allowed.
それはしてはいけません。
You must not do that.
それはプロとしてあるべき姿ではない。
That is not how a professional should be.
それは政治家としてあるまじき行為だ。
That is an act unacceptable for a politician.
教員としてあるまじき発言が問題視されている。
Remarks unacceptable for a teacher are being scrutinized.
彼のような高潔な人物には、到底許すまじき失態であった。
For a person of his integrity, it was an unforgivable blunder.
Easily Confused
Both express prohibition.
Both mean 'must not'.
Both express strong negation.
Common Mistakes
まじきです
まじき行為だ
食べまじき
食べてはいけない
まじきした
まじき行為だった
まじきじゃない
まじき行為だ
彼はまじきだ
彼の行為はまじきだ
まじきな人
あるまじき人
まじきする
まじき行為
まじきこと
あるまじきこと
まじき発言をした
あるまじき発言をした
まじきだ
まじき行為だ
まじきな態度
あるまじき態度
まじきである
あるまじき行為である
まじきだと言った
あるまじき行為だと言った
まじきなことだ
あるまじきことだ
Sentence Patterns
___としてあるまじき行為だ。
それは___まじき失態だ。
___としてあるまじき態度をとった。
___まじき発言が問題になった。
Real World Usage
政治家としてあるまじき行為が発覚した。
プロとしてあるまじき失態を犯しました。
研究者としてあるまじき態度である。
これは教師としてあるまじき発言だ。
それは国民を裏切るあるまじき行為だ。
彼には許すまじき罪があった。
Use with Nouns
Don't Conjugate
Role-Based
High Register
Smart Tips
Use 'aru majiki' to add weight to your argument.
Always pair it with a noun.
Ask: Is this a general rule or a role-based betrayal?
Avoid 'desu/masu' with this form.
Pronunciation
Majiki
Pronounced as ma-ji-ki. The 'ki' is crisp.
Flat
あるまじき↑
Emphasis on the finality of the judgment.
Memorize It
Mnemonic
Think of 'Majiki' as 'My-Giki'—my duty is 'giki' (a made-up word for duty), and if you break it, it's 'Majiki'!
Visual Association
Imagine a judge in a courtroom pointing at a politician, saying 'Majiki!' while a gavel strikes the desk.
Rhyme
When the role is high and the act is low, 'majiki' is the word to show.
Story
A doctor performs a surgery while playing a game on his phone. The hospital director walks in, sees this, and shouts, 'That is a doctor-majiki act!' The doctor is fired immediately.
Word Web
Challenge
Write one sentence about a hypothetical professional blunder using 'あるまじき'.
Cultural Notes
In corporate settings, this is used in formal reprimands to emphasize that an employee has violated the company's code of conduct.
Politicians use this in Diet sessions to attack opponents, framing their actions as a betrayal of the public trust.
Used in novels to describe a character's fall from grace or betrayal of their own principles.
Derived from the classical Japanese negative potential form 'maji' (should not/will not).
Conversation Starters
政治家としてあるまじき行為とは何だと思いますか？
教師としてあるまじき態度とは？
許すまじき失態を経験したことはありますか？
あるまじき発言を聞いた時、どう感じますか？
Journal Prompts
Common Mistakes
Test Yourself
政治家としてある___行為だ。
Which is correct?
Find and fix the mistake:
彼はまじきだ。
それはダメな態度だ。
Can you use 'majiki' for minor mistakes?
A: He lied to the public. B: ___.
あるまじき / 態度 / だ / それは
Match each item on the left with its pair on the right:
Score: /8
Practice Exercises
8 exercises政治家としてある___行為だ。
Which is correct?
Find and fix the mistake:
彼はまじきだ。
それはダメな態度だ。
Can you use 'majiki' for minor mistakes?
A: He lied to the public. B: ___.
あるまじき / 態度 / だ / それは
Match 'majiki' with:
Score: /8
Practice Bank
5 exercises[ 行為 / として / 弁護士 / あるまじき / は / それ ]
It is an unpardonable crime.
プロとして___まじき失態だ。
Select the correct nuance:
Match the following:
Score: /5
FAQ (8)
No, it is way too formal and will sound like you are mocking them or being overly dramatic.
No, it is a fossilized form and does not conjugate.
It helps the flow and emphasizes the existence of the behavior.
No, 'majiki' is for role-based betrayal, while 'beki de wa nai' is for general moral rules.
Yes, as long as the behavior violates the professional standards of that job.
Only in very formal speeches or debates.
It will sound sarcastic or absurdly formal.
It is an archaic form from classical Japanese.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
no debería
Majiki is tied to identity, while 'debería' is general.
ne devrait pas
Majiki is a fixed adnominal modifier.
sollte nicht
Majiki is restricted to formal/literary registers.
〜べからず
Majiki modifies nouns; bekarazu is a predicate.
لا ينبغي
Majiki is specifically for professional roles.
不应该
Majiki is a high-register, rare form.
Learning Path
Prerequisites
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