Meaning & Usage
まじき is a formal and literary grammar pattern in Japanese that expresses that something should not be done, must not occur, or is unworthy of a particular person, position, or status. It functions as an attributive modifier — meaning it always comes directly before a noun — and carries a strong sense of moral condemnation, ethical judgment, or social expectation that has been violated.
Rooted in classical Japanese (文語, bungō), まじき descends from the auxiliary verb まじ, which was the negative counterpart of べし (must; should). While べし expressed obligation or strong expectation, まじ expressed its opposite: prohibition or negative expectation. In modern Japanese, the full conjugation of まじ has largely disappeared, but its attributive form (連体形, rentaikei) まじき has survived and remains in active use in formal writing, legal documents, news reporting, political speeches, and literature.
まじき does not merely label something as inadvisable — it condemns. Reaching for this word means declaring that something fundamentally should not exist or happen, given who or what is involved. The register is one of outrage, solemn condemnation, or non-negotiable principle.
In English, まじき can be translated as "should not," "must not," "that ought not to be," or "unworthy of." The choice of translation depends on the context. When used with にある (にあるまじき), it frequently carries the meaning of "unworthy of one's position" — as in, behavior that is beneath the dignity or responsibility of a particular role.
Because of its classical origins, まじき is rarely used in casual conversation. You will encounter it primarily in written Japanese — newspapers, formal speeches, academic papers, historical dramas (時代劇, jidaigeki), and any context where elevated, formal language is appropriate. Using まじき in casual speech would sound extremely unnatural and archaic, much like using "thou shalt not" in modern English conversation.
Structure & Formation
まじき has two primary formation patterns. Which applies usually depends on whether the sentence names a specific role or profession.
| Pattern | Formation | Meaning |
|---|---|---|
| Pattern 1 | Verb (dictionary form) + まじき + Noun | A [Noun] that should not be [Verb]ed |
| Pattern 2 | Noun (role) + に + ある + まじき + Noun | A [Noun] unworthy of [Role] |
Pattern 1: Verb (dictionary form) + まじき + Noun
A verb in plain present (dictionary) form is directly followed by まじき, which then modifies a noun. The construction expresses that the noun in question should not happen or should not exist.
- 許す + まじき + 罪 → 許すまじき罪 (an unforgivable sin)
- 見逃す + まじき + 問題 → 見逃すまじき問題 (a problem that must not be overlooked)
- 繰り返す + まじき + 過ち → 繰り返すまじき過ち (a mistake that must never be repeated)
Pattern 2: Noun (role/position) + にある + まじき + Noun
This is the most frequently encountered pattern in modern usage. Here, にある works together with まじき to express that something is "unworthy of" or "inappropriate for" the specified role or position. The noun before に indicates a social role, professional position, or status.
- 教師 + にあるまじき + 言動 → 教師にあるまじき言動 (words and actions unworthy of a teacher)
- 医師 + にあるまじき + 態度 → 医師にあるまじき態度 (an attitude unworthy of a doctor)
- 人間 + にあるまじき + 残虐行為 → 人間にあるまじき残虐行為 (atrocities unworthy of a human being)
Note on classical origin: まじき is the 連体形 (rentaikei, attributive form) of the classical auxiliary まじ. Other forms such as the 終止形 まじ (terminal) and 連用形 まじく (adverbial) are rarely seen in modern Japanese outside of historical or extremely formal texts. When studying classical literature you may encounter these forms, but for the N1 exam, まじき is the form you need to master.
Example Sentences
Professional Conduct
医師にあるまじき行為として、厳重に処分された。
Ishi ni aru majiki kōi toshite, genjū ni shobun sareta.
He was severely disciplined for conduct unworthy of a doctor.
教師にあるまじき暴力を振るったとして、解雇された。
Kyōshi ni aru majiki bōryoku wo furutta toshite, kaiko sareta.
She was fired for committing violence unworthy of a teacher.
弁護士にあるまじき不正行為が発覚し、資格を剥奪された。
Bengoshi ni aru majiki fusei kōi ga hakkaku shi, shikaku wo hakudatsu sareta.
His corrupt conduct unworthy of a lawyer was exposed, and he was stripped of his license.
Moral and Ethical Violations
これは決して許すまじき罪である。
Kore wa kesshite yurusu majiki tsumi de aru.
This is an absolutely unforgivable crime.
人間にあるまじき残虐な行為が戦地で行われた。
Ningen ni aru majiki zangyaku na kōi ga senchi de okonawareta.
Cruel acts unworthy of human beings were carried out on the battlefield.
見逃すまじき問題が、社会の底に潜んでいる。
Minogasu majiki mondai ga, shakai no soko ni hisonde iru.
There are problems lurking in the depths of society that must not be overlooked.
Historical and Literary Contexts
武士にあるまじき振る舞いをした者は、切腹を命じられた。
Bushi ni aru majiki furumai wo shita mono wa, seppuku wo meijirareta.
Those who behaved in a manner unworthy of a samurai were ordered to commit seppuku.
かかる所業は、断じて許すまじき反逆である。
Kakaru shogyō wa, danjite yurusu majiki hangyaku de aru.
Such deeds are absolutely unforgivable treason.
Contemporary Formal Usage
政治家にあるまじき発言が物議を醸している。
Seijika ni aru majiki hatsugen ga butsugi wo kamoshite iru.
A statement unworthy of a politician is stirring up controversy.
繰り返すまじき歴史の過ちを、後世に伝えなければならない。
Kurikaesu majiki rekishi no ayamachi wo, kōsei ni tsutaenakereba naranai.
We must pass on to future generations the mistakes of history that must never be repeated.
これは公務員にあるまじき腐敗であり、厳正に対処する。
Kore wa kōmuin ni aru majiki fuhai de ari, gensei ni taisho suru.
This is corruption unworthy of a civil servant, and we will deal with it strictly.
親にあるまじき行為として、児童虐待は絶対に許されない。
Oya ni aru majiki kōi toshite, jidō gyakutai wa zettai ni yurusarenai.
Child abuse, as conduct unworthy of a parent, is absolutely unacceptable.
専門家にあるまじき初歩的なミスが重大な事故を招いた。
Senmonka ni aru majiki shohoteki na misu ga jūdai na jiko wo maneita.
A basic mistake unworthy of an expert caused a serious accident.
Common Mistakes
Mistake 1: Using まじき to end a sentence
❌ この行為は許すまじき。
✅ これは許すまじき行為だ。
まじき is an attributive (連体形) form and must always be followed by a noun. It cannot stand alone as a predicate at the end of a sentence. If you want to express "this should not be forgiven" as a complete statement, restructure the sentence so that まじき modifies a noun. Alternatively, use べきではない or てはならない in predicate position.
Mistake 2: Redundant double negation with べきではない
❌ 彼は教師にあるまじき行動をすべきではない。
✅ 彼は教師にあるまじき行動をした。
まじき already contains the meaning of "should not." Adding べきではない creates a redundant double negative. Use まじき on its own when modifying a noun, or use べきではない independently in predicate position without まじき.
Mistake 3: Using まじき in casual speech
❌ ねえ、それって友達にあるまじき態度じゃない？
✅ ねえ、それって友達として最低な態度じゃない？
まじき is extremely formal and comes from classical Japanese. Using it in casual conversation sounds theatrical and unnatural. In everyday speech, prefer expressions like 〜として最低だ (lowest for a ~), 〜としておかしい (strange for a ~), or べきではない (should not).
Mistake 4: Incorrect verb form before まじき
❌ 許さないまじき罪 / 許してまじき罪 ✅ 許すまじき罪
The verb before まじき must be in its dictionary (plain present) form. Do not use negative forms (〜ない), te-forms (〜て), or past forms (〜た) before まじき. The verb simply provides the base action, and まじき itself supplies the negative prohibitive meaning.
Mistake 5: Omitting ある in the role-position pattern
❌ 教師まじき行為 / 教師にまじき行為 ✅ 教師にあるまじき行為
When using まじき to describe behavior unworthy of a role or position, the correct pattern requires にある before まじき. The verb ある (to be) is essential here — it conveys being in a state or position appropriate to that role. Omitting ある or placing に directly before まじき is grammatically incorrect and will sound strange to native speakers.
Cultural Notes
まじき occupies a special place in Japanese linguistic culture as a relic of 文語 (bungō, classical literary Japanese) that has survived in modern usage precisely because of the powerful moral weight it carries. That archaic ring is part of its power. When a writer reaches for まじき, the classical register signals a gravity that no modern equivalent quite matches.
In Japanese society, where professional roles carry significant expectations and social obligations, the pattern にあるまじき is particularly resonant. Japanese culture places strong emphasis on behaving appropriately to one's social role (立場, tachiba). When a person in authority violates that expectation, にあるまじき is a potent condemnation. It names not just personal failure but betrayal of the role itself — and the trust society placed in it.
You will frequently encounter まじき in newspaper editorials, formal political statements, and legal proceedings where a serious breach of conduct needs to be condemned with appropriate gravitas. Political scandals involving public figures are routinely described using 政治家にあるまじき言動 or 公人にあるまじき行為. The phrase has become a set expression in formal condemnations — so common in news coverage that intermediate learners may have met it long before studying its grammar.
In historical dramas and classical literature, まじき appears more broadly in its original range of uses, reflecting the fuller conjugation of まじ. Reading Meiji-era literature or pre-war texts, you will encounter it frequently. Once you recognize まじき, such texts become considerably more transparent.
JLPT Tips
On the JLPT N1 exam, まじき typically appears in reading comprehension sections featuring formal texts such as newspaper editorials, essays, or historical passages. You are unlikely to encounter it in a casual dialogue or listening section. Recognizing it in its attributive role — immediately before a noun — is the key to parsing sentences that contain it.
Four points matter most for the exam: (1) まじき always precedes and modifies a noun; it cannot end a sentence. (2) The most common pattern is Noun (role) + にあるまじき + Noun. (3) The verb before まじき is always in dictionary form. (4) The overall meaning is a strong "should not" or "unworthy of" with formal, condemnatory nuance.
In grammar-choice questions, まじき is often contrasted with べきではない or てはならない. The key distinguishing factor is register and syntactic role: まじき is formal and attributive (must modify a noun), while べきではない and てはならない are modern and can stand as predicates. If the answer slot appears immediately before a noun in a formal text, まじき is almost certainly the correct choice.
The にあるまじき construction trips up many learners. The ある here does not carry its usual existential meaning — it locks in the idea of occupying a role or position, and the whole にあるまじき is a fixed chunk. Treat 〜にあるまじき〜 as a single unit meaning "unworthy of 〜" and these sentences will resolve quickly under exam pressure.
まじき most commonly surfaces in passages about professional ethics, historical events, or social scandals — all recurring N1 reading topics. Building topic vocabulary pays off: misconduct (不正行為, 非行), professional roles (医師, 弁護士, 教育者), condemnation (厳重処分, 問題視). Recognizing these on sight makes passages containing まじき much easier to follow.