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B2 verb #8,500 most common 7 min read

論及

ronkyuu Top 8,500

Practice it Examples Notes & Tips 論及 in 30 Seconds

Explanation 論及 in your Level:

At the A1 level, '論及' is much too difficult to use. You should focus on simple verbs like '言う' (to say) or '話す' (to speak). If you want to say you 'talked about' something, use '〜について話す'. '論及' is a word you will likely never see in a beginner textbook because it is only used in very formal situations, like university lectures or formal reports. Just remember that Japanese has special 'hard' words for 'saying' things in serious books.

At the A2 level, you might start seeing formal words in news headlines, but '論及' is still very rare. You are likely learning '紹介する' (to introduce) or '説明する' (to explain). Think of '論及' as a very advanced version of '〜について書く' (to write about). If you see it in a reading passage, just know it means the writer is talking about a specific topic in a very serious way. You don't need to use it in your own speaking yet.

At the B1 level, you are becoming more comfortable with formal Japanese (Keigo and Kango). You might encounter '論及' in JLPT N2 level reading materials or formal essays. It is important to distinguish it from '言及' (mention). While '言及' is about the act of mentioning, '論及' implies that the author is discussing the topic as part of a logical argument. You should start recognizing it in academic texts and understand that it indicates a formal reference to a subject.

At the B2 level, this is a key vocabulary word for you. You are expected to read editorials and academic papers where '論及' is common. You should understand its grammatical structure ([Noun] に論及する) and be able to use it in formal writing, such as a university entrance essay or a business report. It shows that you have a high level of literacy and can distinguish between casual 'talking' and formal 'academic reference'.

At the C1 level, you should be able to use '論及' with precision, choosing it over '言及' or '触れる' when you want to emphasize the analytical nature of a reference. You should also be familiar with related collocations like '詳細に論及する' (discuss in detail) or '〜への論及を欠く' (lacks reference to...). You can use this word to structure complex arguments in your writing, showing how your main thesis reaches out to related academic theories or social phenomena.

At the C2 level, '論及' is a standard part of your professional and academic lexicon. You understand the subtle rhetorical weight it carries—how it frames a mention as a deliberate, logical extension of an argument. You can recognize when an author uses '論及' to lend authority to their text or when they use it to subtly critique another's work by pointing out what was *not* '論及' (discussed). You are essentially a native-level user who can use this word in any formal context with perfect nuance.

Practice it Examples Notes & Tips

論及 in 30 Seconds

論及 (ronkyū) is a high-level academic verb meaning 'to mention' or 'refer to' a topic within a formal argument.
It combines '論' (logic/argument) and '及' (to reach), suggesting an argument extending to a specific point.
Commonly used in theses, newspaper editorials, and formal speeches with the particle 'に'.
It is much more formal than '言及' (mention) and '触れる' (touch upon).

The Japanese word 論及 (ronkyū) is a highly formal and sophisticated verb used primarily in academic, legal, and literary contexts. At its core, it means to mention or refer to a specific subject, but with a nuanced layer of 'extending' one's discussion or argument to reach that topic. The first kanji, 論 (ron), signifies logic, theory, or argument, while the second kanji, 及 (kyū), means to reach or extend to. Therefore, 論及 literally implies that your logical argument has progressed to the point where it touches upon a particular theme. This word is not used in daily conversation; you wouldn't use it to say you mentioned a movie to a friend. Instead, you use it when a scholar in a thesis refers to a previous study, or when a politician in a formal address touches upon a sensitive socio-economic issue.

Register: Academic and Formal (Kango). It sits at the top of the formality hierarchy for verbs meaning 'to mention'.

Grammatical Connection: It is almost always used with the particle に (ni), as in '[Topic] に論及する'.

著者は第三章において、近代化が地方文化に与えた影響に論及している。(The author refers to the impact modernization had on local culture in the third chapter.)

When using 論及, the speaker or writer is signaling that the mention is not accidental or casual, but a deliberate part of a structured discourse. It suggests that the topic mentioned is relevant to the broader thesis being presented. In contrast to the more common 言及 (genkyū), which also means to mention or refer to, 論及 carries a stronger sense of 'discussing' or 'treating' the subject as part of an analytical process. If you are writing a research paper in Japanese, 論及 is a powerful tool to demonstrate high-level literacy and precision. It allows you to weave different threads of evidence together by showing how your primary argument reaches out to secondary but essential points of interest.

首相の演説は、外交政策のみならず、国内の格差問題にも論及した。(The Prime Minister's speech touched upon domestic inequality issues in addition to foreign policy.)

Mastering 論及 (ronkyū) requires understanding its syntactical environment. It functions as a suru-verb, meaning it can be used as a noun or combined with suru to form an action. Because it is an academic term, it is frequently found in the passive voice (論及される) to describe what topics are covered in a text, or in the potential form to indicate what a theory is capable of addressing. It is also often used in the form 〜に論及している to describe the ongoing state of a written work's content. Unlike verbs like 話す (hanasu), which focus on the act of speaking, 論及 focuses on the conceptual reach of an argument.

Structure A: [Noun] に論及する: This is the standard active form. Example: '彼はその可能性に論及した' (He referred to that possibility).

この論文は、先行研究の不備に鋭く論及している。(This paper sharply refers to the deficiencies in previous research.)

In many cases, 論及 is paired with adverbs that qualify the depth or nature of the mention. Common adverbs include 詳細に (shōsai-ni - in detail), 簡潔に (kanketsu-ni - briefly), or 直接的に (chokusetsu-teki-ni - directly). These pairings help clarify whether the author just brushed past a topic or gave it a thorough analysis. Using 論及 without such adverbs usually implies a standard academic reference. Furthermore, it is often found in the introductory or concluding sections of a text to outline the scope of the work.

Structure B: [Noun] への論及: Using it as a noun phrase. Example: '古典への論及が欠けている' (References to the classics are missing).

報告書には、予算の配分に関する具体的な論及はなかった。(There was no specific mention of budget allocation in the report.)

You will encounter 論及 (ronkyū) in environments where precision and authority are paramount. One of the most common places is in academic journals (Gakujutsu zasshi). Here, researchers use it to situate their work within the existing body of knowledge. For example, 'In this paper, we refer to the theories of Chomsky...' would likely use 論及. It signals that the researcher has critically engaged with the cited material. Another frequent venue is in editorial columns (Shasetsu) of major newspapers like the Asahi or Nikkei. When an editor criticizes a government policy for failing to 'touch upon' a crucial social problem, 論及 is the word of choice.

法廷で弁護人は、被告の成育歴に論及し、情状酌量を求めた。(In court, the defense attorney referred to the defendant's upbringing and asked for leniency.)

In the realm of high-level business strategy, you might hear this word during a board meeting or in a white paper. If a company's annual report fails to 論及 environmental sustainability, it might be seen as a significant oversight by investors. It is also used in literary criticism. Critics use it to describe which themes or historical events a novelist chooses to address in their work. Because 論及 suggests a logical connection, its presence implies that the author is dealing with the topic as a serious subject of inquiry rather than a mere passing thought.

News Broadcasts: Reporters use it when summarizing a politician's speech: 'The minister also referred (ronkyū) to the possibility of tax hikes.'

教科書検定において、特定の歴史的事実への論及が議論の的となった。(In textbook screening, the mention of specific historical facts became a point of contention.)

The most common mistake learners make with 論及 (ronkyū) is using it in casual or informal contexts. Because it is a 'stiff' word, using it with friends or in a casual blog post can make the speaker sound arrogant, overly intellectual, or simply robotic. Another frequent error is confusing it with 言及 (genkyū). While they are often interchangeable, 論及 specifically implies that the mention is part of a 'discussion' or 'argument' (論), whereas 言及 is a broader term for 'referring to something' in speech or writing. If you just 'say' something without an underlying logical framework, 言及 is safer.

Mistake: Particle Confusion: Using を (wo) instead of に (ni). While some verbs of mention take 'wo', 論及 almost exclusively takes 'ni'.

❌ 彼はその問題を論及した。(He mentioned the problem - Incorrect particle)
✅ 彼はその問題に論及した。(He mentioned the problem - Correct particle)

Another mistake is using 論及 for physical objects or people in a non-discursive sense. You cannot 'ronkyū' a physical chair you are looking at; you 'ronkyū' the *concept* of the chair or its presence in a text. It is a word for the world of ideas and text. Lastly, learners sometimes forget that 論及 implies a certain level of depth. If you only mention something in a single word without any context, 触れる (fureru) is more appropriate. 論及 suggests that you have 'extended' your logic to that point, which usually requires at least a sentence or two of context.

To truly understand 論及 (ronkyū), you must compare it to its synonyms. The Japanese language has many ways to say 'refer to' or 'mention', each with a different level of formality and nuance. Choosing the right one is key to sounding natural and professional. Below are the most common alternatives and how they differ from 論及.

言及 (Genkyū): The closest synonym. It means 'to mention'. While 論及 implies an 'argumentative reach', 言及 is a more general term for 'bringing something up' in speech or writing. It is slightly less formal than 論及 but still used in professional settings.

触れる (Fureru): Literally 'to touch'. Used metaphorically to mean 'to touch upon a topic'. This is much more common in daily conversation and semi-formal writing. It suggests a brief or passing mention.

述べる (Noberu): To state or express. This focuses on the act of stating an opinion or fact rather than the act of 'referring' to an external topic. If you are the one originating the thought, use 述べる.

言及を避ける (Genkyū o sakeru): To avoid mentioning. This is the common phrase used in news when a politician refuses to comment on a specific scandal.

Comparison:
1. その点に触れる (Touch on that point - casual/brief)
2. その点に言及する (Mention that point - formal/neutral)
3. その点に論及する (Discuss/refer to that point in an argument - academic/highly formal)

How Formal Is It?

Fun Fact

The character '及' (kyū) depicts a person reaching out to grab another person from behind, symbolizing the act of 'reaching' or 'catching up'. In '論及', it shows your logic 'catching up' to a topic.

Pronunciation Guide

UK /ron.kjuː/

US /roʊn.kjuː/

The pitch usually starts high on 'ron' and drops slightly on 'kyū' in standard Tokyo Japanese (Atamadaka or Heiban depending on the sentence flow).

Rhymes With

言及 (Genkyū) 普及 (Fukyū) 追及 (Tsuikyū) 波及 (Hakyū) 救急 (Kyūkyū) 持久 (Jikyū) 特急 (Tokkyū) 至急 (Shikyū)

Common Errors

Pronouncing 'ron' like 'run' (the 'o' is more like 'oh').
Shortening the 'kyū' to 'kyu' (the long vowel is essential).
Confusing the pitch accent with 'ronkyū' (logistics - which is actually written and pronounced differently).
Failing to pronounce the 'n' clearly before the 'k'.
Adding an extra vowel between 'n' and 'k'.

Difficulty Rating

Reading 4/5

Requires knowledge of N2/N1 level kanji and formal writing styles.

Writing 5/5

Difficult to use correctly without sounding overly formal or using wrong particles.

Speaking 5/5

Rarely used in speech unless giving a formal lecture or presentation.

Listening 4/5

Common in news and documentaries, but requires a high level of vocabulary.

What to Learn Next

Prerequisites

論 (Logic) 及ぶ (To reach) 言及 (Mention) 論文 (Thesis) 議論 (Discussion)

Learn Next

言及 (Genkyū) 示唆 (Shisa - Suggestion) 考察 (Kōsatsu - Consideration) 言明 (Genmei - Declaration) 詳述 (Shōjutsu - Detailed explanation)

Advanced

敷衍 (Fu'en - Elaborating) 喝破 (Kappa - Proclaiming a truth) 看破 (Kanpa - Seeing through) 論駁 (Ronbaku - Refutation) 論証 (Ronshō - Proof)

Grammar to Know

Suru-verbs (III)

論及する、論及しない、論及した。

Particle 'Ni' for target of mention

問題に論及する。

Passive voice for academic writing

その点は前章で論及されている。

Noun + no + Noun

過去への論及。

Te-form for continuing action/state

詳しく論及している。

Examples by Level

かれはほんについてはなしました。

He talked about the book.

A1 level uses 'hanashimashita' instead of 'ronkyū'.

せんせいはしゅくだいについていいました。

The teacher spoke about the homework.

Simple 'iu' is the A1 equivalent.

ニュースでなにかをいっていました。

They were saying something on the news.

Casual 'itte imashita' for reporting news.

ともだちはそのニュースをしりませんでした。

My friend didn't know that news.

Negative form of 'shiru'.

わたしはそのことについてかきました。

I wrote about that thing.

Simple 'kakimashita'.

だれがそれをいいましたか？

Who said that?

Question form of 'iu'.

あのひとはわたしのなまえをよびました。

That person called my name.

Using 'yobu' for names.

テレビでおもしろいことをはなしていました。

They were talking about something interesting on TV.

Te-form + imashita.

彼はその問題について説明しました。

He explained about that problem.

A2 uses 'setsumei' for formal explanation.

レポートで新しい技術を紹介しました。

I introduced new technology in the report.

Using 'shōkai suru' for introduction.

首相は経済について少し話しました。

The Prime Minister spoke a little about the economy.

A2 uses 'sukoshi hanashita' for brief mentions.

著者はあとがきで家族に感謝しました。

The author thanked their family in the afterword.

Focus on the 'afterword' context.

この記事は環境問題について書いています。

This article is writing about environmental issues.

Using 'kaite imasu' to describe content.

彼女は会議でその点に触れました。

She touched on that point in the meeting.

A2 begins using 'fureru' (to touch upon).

先生は授業で歴史の背景を話しました。

The teacher talked about the historical background in class.

Compound noun 'rekishi no haikei'.

その本には将来のことが書いてあります。

The things about the future are written in that book.

Te-form + arimasu for state.

彼は論文の中で先行研究に言及している。

He mentions previous research in his thesis.

B1 introduces 'genkyū' (mention).

その記事は政府の対応を批判的に述べている。

The article states the government's response critically.

Using 'noberu' for formal stating.

講演者は教育の重要性を強調しました。

The speaker emphasized the importance of education.

Using 'kyōchō' (emphasize).

この資料は統計データに基づいています。

This material is based on statistical data.

Grammar 'ni motozuite iru'.

会議では予算の削減について議論された。

The reduction of the budget was discussed in the meeting.

Passive form 'giron sareta'.

著者は現代社会の矛盾を指摘している。

The author points out the contradictions of modern society.

Using 'shiteki' (point out).

報告書は事故の原因に詳しく触れている。

The report touches on the cause of the accident in detail.

Using 'fureru' with 'kuwashiku'.

彼は将来の展望を明確に語った。

He clearly spoke about his future prospects.

Using 'kataru' for narrative speaking.

本稿では、AI技術の倫理的側面に論及する。

This paper refers to the ethical aspects of AI technology.

B2 standard use of 'ronkyū' in academic writing.

彼は演説の中で、格差社会の問題に論及した。

In his speech, he touched upon the problem of the wealth gap.

Formal reference in a speech.

その学説は、言語習得のプロセスに論及している。

That theory refers to the process of language acquisition.

Describing the scope of a theory.

批評家は、その小説の歴史的背景に論及した。

The critic referred to the historical background of the novel.

Professional literary criticism context.

白書は、少子高齢化の現状に詳細に論及している。

The white paper discusses the current state of the declining birthrate in detail.

Collocation 'shōsai-ni ronkyū'.

彼はその事件の背後関係には論及を避けた。

He avoided mentioning the background details of that incident.

Noun form 'ronkyū o sakeru'.

論文の結論部で、今後の課題に論及している。

In the conclusion of the paper, it refers to future challenges.

Using 'ronkyū' to outline scope.

この研究は、心理学的な側面からも論及されている。

This research is also discussed from a psychological perspective.

Passive form 'ronkyū sarete iru'.

著者は、資本主義の限界について多角的に論及している。

The author discusses the limits of capitalism from multiple perspectives.

High-level adverb 'takaku-teki-ni'.

その判決文は、プライバシー権の解釈に深く論及した。

The judicial decision referred deeply to the interpretation of privacy rights.

Legal context with 'fukaku' (deeply).

彼は自身の著作において、死生観にまで論及を広げた。

In his own work, he expanded his discussion to even include views on life and death.

Structure 'made ronkyū o hirogeta'.

報告書は、失敗の構造的要因に鋭く論及している。

The report sharply refers to the structural factors of the failure.

Adverb 'suruku' (sharply) used metaphorically.

その演説は、国際情勢の緊迫化に直接的に論及した。

The speech directly referred to the escalating international tensions.

Adverb 'chokusetsu-teki-ni'.

この学説が環境負荷に論及していない点は、批判の的だ。

The fact that this theory does not refer to environmental impact is a target of criticism.

Negative form 'ronkyū shite inai'.

彼は、メディアの社会的責任に改めて論及した。

He referred once again to the social responsibility of the media.

Adverb 'aratamete' (once again).

論文の序論において、本研究の範囲に論及しておく必要がある。

In the introduction of the paper, it is necessary to mention the scope of this research.

Auxiliary verb '~te oku' (do in advance).

カントの定言命法に論及することなく、この倫理問題を論じることは不可能だ。

It is impossible to discuss this ethical issue without referring to Kant's categorical imperative.

Complex double negative structure.

当該論文は、ポストモダン思想の文脈において、主体の解体に論及している。

The paper in question refers to the deconstruction of the subject within the context of postmodern thought.

Highly technical academic terminology.

彼は、権力構造の不可視性にまで論及を及ぼした。

He extended his discussion even to the invisibility of power structures.

Using 'ronkyū o oyoboshita' for 'extended reference'.

その批評は、作家の無意識的な願望にまで踏み込んで論及している。

The critique goes as far as to refer to the author's unconscious desires.

Verb 'fumikonde' (stepping into).

歴史学的な知見に基づき、植民地支配の遺制に論及する。

Based on historical knowledge, I will refer to the legacy of colonial rule.

Professional historiographical register.

その論説は、デジタル・トランスフォーメーションがもたらす社会変革に包括的に論及した。

The editorial referred comprehensively to the social transformation brought about by digital transformation.

Adverb 'hōkatsu-teki-ni' (comprehensively).

政治家がこの核心的課題に論及を避け続けることは、無責任の極みである。

For a politician to continue avoiding mention of this core issue is the height of irresponsibility.

Noun phrase 'mu-sekinin no kiwami'.

この著作は、東西の宇宙観の相違にまで論及が及んでいる。

This work extends its references even to the differences between Eastern and Western cosmologies.

Intransitive 'ronkyū ga oyonde iru'.

Synonyms

言及触れる記述述べる

Antonyms

黙殺省略

Common Collocations

詳細に論及する

核心に論及する

不備に論及する

可能性に論及する

一切論及しない

〜への論及を欠く

広範に論及する

直接的に論及する

簡潔に論及する

歴史的背景に論及する

Common Phrases

論及を避ける

— To avoid mentioning. Used when someone intentionally skips a sensitive topic.

当局はその原因についての論及を避けた。

論及に値する

— Worthy of mention. Used for significant topics.

その成果は、特筆すべき論及に値する。

論及の対象

— The subject of mention/discussion.

今回の調査では、個人のプライバシーは論及の対象外とした。

論及の余地がない

— No room for mention or no need to discuss further.

彼の潔白については、もはや論及の余地がない。

論及が及ぶ

— The mention extends to. Used to show the breadth of a work.

彼の興味は宇宙論にまで論及が及んでいる。

詳細な論及

— A detailed reference/discussion.

この点に関する詳細な論及は次章に譲る。

論及を試みる

— To attempt to mention/discuss.

本稿では、新しい教育モデルへの論及を試みる。

論及を深める

— To deepen the discussion/reference.

対話を通じて、相互の理解に論及を深めた。

事実に論及する

— To refer to the facts.

彼は客観的な事実にのみ論及した。

論及の必要性

— The necessity of mentioning/discussing.

この段階でリスクに論及しておく必要性がある。

Often Confused With

論及 vs 言及 (Genkyū)

The most common confusion. 'Genkyū' is simply 'to mention', while 'ronkyū' implies 'mentioning as part of a discussion/logic'.

論及 vs 論議 (Rongi)

Means 'discussion' or 'debate'. 'Ronkyū' is the act of referring to a topic *within* a discussion.

論及 vs 言明 (Genmei)

Means 'to declare' or 'state clearly'. 'Ronkyū' is just 'referring to' something.

Idioms & Expressions

"論及を待たない"

— Goes without saying; doesn't even need mentioning. Used for obvious truths.

彼の才能については、今さら論及を待たない。

Literary

"一言も論及しない"

— Not to mention even a single word about it. Emphasizes total omission.

彼はその不祥事について、記者会見で一言も論及しなかった。

Formal

"多角的に論及する"

— To discuss from many angles. An idiomatic way to describe comprehensive analysis.

この問題には多角的に論及する必要がある。

Academic

"核心に論及する"

— To touch upon the heart of the matter. Getting to the most important part.

彼の批判は、制度の核心に論及していた。

Formal

"論及の矛先"

— The 'spearhead' of the discussion/mention. Usually used when the mention is critical.

論及の矛先は、企業の管理体制に向けられた。

Journalism

"論及を広げる"

— To widen the scope of mention. Including more topics in an argument.

彼は経済から文化へと論及を広げた。

Academic

"論及を絞る"

— To narrow the focus of mention. Concentrating on a specific point.

今回は、若者の雇用問題に論及を絞ります。

Formal

"論及に窮する"

— To be at a loss for what to say/mention. Often when backed into a corner.

鋭い質問に対し、彼は論及に窮した。

Formal

"論及を尽くす"

— To mention/discuss everything possible. Exhaustive discussion.

このテーマに関しては、すでに論及が尽くされている。

Academic

"論及の端緒"

— The starting point or clue for a mention/discussion.

この発見が、新たな宇宙論への論及の端緒となった。

Literary

Easily Confused

論及 vs 言及 (genkyū)

They both mean 'to mention'.

Ronkyū (論及) has the 'Ron' (argument) kanji, making it more academic and suggesting a logical extension of an argument. Genkyū (言及) is more general.

General mention: 言及 / Academic reference: 論及

論及 vs 触れる (fureru)

Both can mean 'to touch on a topic'.

Fureru is much more casual and suggests a brief mention. Ronkyū is formal and suggests depth.

Brief mention: 触れる / Formal discussion: 論及

論及 vs 追及 (tsuikyū)

The second kanji '及' is the same.

Tsuikyū means to 'pursue' or 'investigate' (like a crime or responsibility). Ronkyū is just to 'refer to'.

Investigate responsibility: 責任を追及する / Refer to responsibility: 責任に論及する

論及 vs 普及 (fukyū)

The second kanji '及' is the same.

Fukyū means 'to spread' or 'become popular' (like a technology). Ronkyū is 'to mention'.

Smartphones spread: スマホが普及する / Mention smartphones: スマホに論及する

論及 vs 論証 (ronshō)

The first kanji '論' is the same.

Ronshō means 'to prove' or 'demonstrate' a theory with evidence. Ronkyū is just 'referring' to it.

Prove a theory: 論証する / Refer to a theory: 論及する

Sentence Patterns

[Author] は [Subject] に論及している。

著者は格差問題に論及している。

[Document] では [Topic] に論及されている。

白書では環境対策に論及されている。

[Topic] への論及を避ける。

彼は過去の失敗への論及を避けた。

[Adverb] [Topic] に論及する。

詳細に将来の計画に論及する。

[Topic] にまで論及が及ぶ。

議論は哲学的な問題にまで論及が及んだ。

[Topic] に論及することなく、〜は語れない。

経済に論及することなく、この国は語れない。

[Topic] への論及を欠いている。

この説は心理的要因への論及を欠いている。

[Topic] に論及を及ぼす。

彼はその矛盾点に論及を及ぼした。

Word Family

Nouns

論及 (ronkyū) - Mention/Reference

Verbs

論及する (ronkyū suru) - To mention/refer to

Adjectives

論及された (ronkyū sareta) - Mentioned/Referred to (passive participle)

議論 (giron) - Discussion

論文 (ronbun) - Thesis

論理 (ronri) - Logic

言及 (genkyū) - Mention

普及 (fukyū) - Spread

How to Use It

frequency

Rare in daily life; high in academic and high-level journalistic writing.

Common Mistakes

Using 'wo' instead of 'ni'. → 問題に論及する (Mondai ni ronkyū suru)
Ronkyū is an intransitive verb in terms of its particle usage, requiring 'ni' to indicate the target of the mention.
Using it in a casual conversation with friends. → その話、さっき言ったよ (Sono hanashi, sakki itta yo)
Ronkyū is too formal for daily life. It sounds like you are reading a textbook out loud.
Confusing it with 'tsuikyū' (pursue). → 原因に論及する (Refer to the cause)
Tsuikyū (追及) means to chase or investigate. Ronkyū is just to mention.
Using it to mean 'to argue'. → その点について議論する (Discuss that point)
Ronkyū means to *mention* as part of an argument, not to *do* the entire argument itself.
Pronouncing 'kyū' as a short 'kyu'. → Ronkyū (long vowel)
Japanese long vowels are phonemic. Shortening them can change the meaning or make the word unintelligible.

Tips

Use in Theses

When writing a university paper, use '論及' to show you've properly cited your sources. It makes your writing sound professional and rigorous.

Particle Mastery

Always remember the 'ni' (に). Using 'wo' (を) is a common mistake that will immediately mark you as a non-native speaker.

Logical Reach

Use 'ronkyū' when you want to emphasize that your discussion has naturally reached a certain point. It's not just a random mention.

Formal Speeches

If you ever have to give a formal speech in Japanese, using 'ronkyū' to touch on important points will impress your audience with your vocabulary.

Identifying Key Points

When you see 'ronkyū' in a text, it's often followed by an important piece of evidence or a key secondary topic. Pay attention to what follows!

Adverb Pairing

Pair it with 'shōsai-ni' (detailed) or 'kanketsu-ni' (brief) to specify how much you are going to talk about the topic.

News Keywords

In news, 'ronkyū o saketa' is a very common phrase to describe politicians avoiding questions. Memorize it as a set.

Kanji Breakdown

Think of 'Ron' as 'Theory' and 'Kyū' as 'Reach'. Theory-Reach. It helps you remember the formal 'mention' meaning.

Better than 'Iu'

In formal writing, replace 'iu' (say) with 'ronkyū suru' to immediately elevate the level of your Japanese.

Academic Respect

Using this word when referring to other people's work shows that you treat their research with serious academic consideration.

Memorize It

Mnemonic

Think of a 'Ron' (論 - logic) that is 'Queueing' (及 - reaching/waiting) to get into your paper. Your logic is reaching the next topic.

Visual Association

Imagine a long bridge (your argument) finally reaching a small island (the topic). The act of the bridge touching the island is 'ronkyū'.

Word Web

論 (Logic) 及 (Reach) 論文 (Thesis) 議論 (Discussion) 普及 (Spread) 及ぶ (To reach/extend) 言及 (Mention) 追及 (Pursue)

Challenge

Try to write a sentence about a book you like, using 'ronkyū' to say which theme the author mentions. Remember to use 'ni'!

Word Origin

Composed of two Sino-Japanese characters (Kango). '論' (ron) originates from middle Chinese 'lùn', meaning to arrange, discuss, or reason. '及' (kyū) comes from 'jí', meaning to reach or come up to.

Original meaning: To reach a point of logic or to extend an argument to a specific topic.

Sino-Japanese (Kango)

Cultural Context

There are no major sensitivities, but using it in casual conversation can make you sound 'snobbish' or 'over-intellectual'.

The English equivalent 'to refer to' or 'to touch upon' is often used in similar academic contexts, but 'ronkyū' is strictly more formal and rarely used in speech compared to 'refer to'.

Used frequently in the 'Shasetsu' (Editorials) of the Asahi Shimbun. Common in literary critiques of Natsume Soseki or Yukio Mishima. Found in the official 'White Papers' (Hakusho) of the Japanese government.

Practice in Real Life

Real-World Contexts

University Thesis Writing

先行研究に論及する
本稿の範囲に論及する
不備に論及する
詳細に論及する

Newspaper Editorials

政府の責任に論及する
背景に論及する
論及を避ける
核心に論及する

Legal Documents

判決文で論及する
権利に論及する
事実に論及する
論及の必要性

Formal Speeches

将来の展望に論及する
感謝の意に論及する
改めて論及する
簡潔に論及する

Literary Criticism

作家の意図に論及する
時代の空気に論及する
メタファーに論及する
多角的に論及する

Conversation Starters

"「この論文、著者が途中で急に政治問題に論及し始めるのが面白いよね。」"

"「昨日の首相の会見、増税の可能性については一切論及しなかったね。」"

"「新しい教科書では、あの歴史的事件にどう論及されているんだろう？」"

"「文学批評において、作者のプライベートにまで論及するのは適切だと思う？」"

"「報告書の中で、リスク管理の不備に論及しておくべきじゃないかな？」"

Journal Prompts

今日読んだ記事の中で、筆者が最も強調して論及していたポイントは何ですか？

自分が論文を書くとしたら、どのような社会問題に論及したいですか？その理由も書いてください。

「論及を避ける」という行為が、政治においてどのような意味を持つか考察してください。

最近のニュースで、メディアがもっと詳細に論及すべきだと思うトピックを一つ選んでください。

自分の人生を一つの物語とするなら、どのエピソードに一番論及してほしいですか？

Frequently Asked Questions

10 questions

It is generally too formal for most business emails. You should use '言及する' (genkyū suru) or '触れる' (fureru) unless you are writing a very formal report or a white paper where an academic tone is required.

While both mean 'to mention', 'ronkyū' (論及) implies that the mention is a logical part of an argument or discussion. 'Genkyū' (言及) is a more neutral term for 'referring to' something in speech or writing. Think of 'ronkyū' as 'referring as part of a thesis'.

Yes, in almost all cases, the target of the mention is marked with 'ni' (e.g., Aに論及する). You might see 'への論及' when it is used as a noun phrase, but for the verb, 'ni' is the standard.

Only in very formal settings like academic lectures, political speeches, or formal debates. You will almost never hear it in casual conversation or even standard office talk.

It is neutral. It simply describes the act of mentioning. However, it can be used in negative contexts, such as 'ronkyū o saketa' (avoided mentioning), which might imply a cover-up or oversight.

Yes, but you are referring to the *person as a topic* in a discussion, not 'referring to' them in a physical sense. For example, 'The author mentions (ronkyū) the works of Einstein'.

Common translations include 'to refer to', 'to touch upon', 'to mention', or 'to address'. In academic contexts, 'to treat' or 'to discuss' also work well.

You can say '論及を欠いている' (ronkyū o kaite iru) or '論及していない' (ronkyū shite inai).

It is significantly more common in writing, particularly in non-fiction, academic papers, and high-level journalism.

It is generally considered an N1 level word, though it might appear in N2 reading passages. It is definitely a 'B2' level word in the CEFR framework.

Test Yourself 191 questions

writing

Write a formal sentence in Japanese using '論及' to say that the author mentioned the impact of the environment.

Well written! Good try! Check the sample answer below.