This page in your language

فارسی

العربية

Deutsch

Español

Français

日本語

한국어

Português

中文

हिन्दी

B1 adjective #3,000 most common 9 min read

真剣な

shinken na Top 3,000

Practice it Examples Notes & Tips 真剣な in 30 Seconds

Explanation 真剣な in your Level:

At the A1 level, you can think of 真剣 (しんけん - shinken) as a very strong way to say 'serious.' In English, we often say 'I'm serious!' when we want someone to believe us or stop joking. In Japanese, you can say Shinken da yo! to mean the same thing. At this stage, just remember that it describes a feeling of being very focused. You might see it in simple sentences like 'He is serious' (Kare wa shinken desu). You don't need to worry about the complex history of the word yet. Just know that it is a 'na-adjective,' so you use it like shinken na [noun] or shinken ni [verb]. It is a useful word to show that you are trying your best in your Japanese studies! Think of it as '100% focus.'

At the A2 level, you should start using 真剣に (shinken-ni) as an adverb to describe how you do things. For example, shinken-ni benkyou suru (to study seriously) or shinken-ni kiku (to listen seriously). This is a step up from just saying 'I'm trying hard.' It shows that you are not distracted. You will also notice the difference between shinken and majime. While majime is for a person who is always good and diligent, shinken is for a specific moment of deep focus. If you are playing a game and you stop laughing and start focusing really hard to win, that is being shinken. You can also use it to ask questions: Shinken na no? (Are you serious?). It's a great word for expressing your commitment to a task.

At the B1 level, you are expected to understand the nuance of 真剣 (shinken) in more formal and social contexts. This is the level where the 'serious dating' (shinken kousai) meaning becomes relevant. You should be able to use it to describe attitudes (shinken na taido) and facial expressions (shinken na kao). You should also be aware of its origin—the 'real sword' (shinken)—to appreciate why it feels so much more intense than other words for 'serious.' At this level, you should be able to distinguish shinken from shinkoku (grave/serious situations). Remember: shinken is about the person's mind, while shinkoku is about the external problem. You can use it in your writing to show a character's determination or in a speech to emphasize your earnestness.

At the B2 level, you should be comfortable using 真剣 (shinken) in professional and academic settings. You might use the noun form shinken-mi to discuss the 'seriousness' or 'degree of earnestness' of a proposal or a student's attitude. For example, 'His proposal lacks seriousness' (Kare no teian ni wa shinken-mi ga kakete iru). You should also understand idiomatic uses like shinken shoubu (a match for real/a fight to the finish). At this level, you can use the word to describe complex atmospheres or the philosophical approach someone takes to their craft. You will hear it in news reports and business meetings where the focus is on the intensity of effort required to solve a problem. It’s about the 'all-or-nothing' mentality.

At the C1 level, you should appreciate the subtle rhetorical power of 真剣 (shinken). It can be used to contrast with 'asobi' (play) or 'gishiki' (mere ritual). When a leader calls for shinken na giron (serious/earnest discussion), they are asking for a debate that transcends superficiality and reaches the core of the issue. You should be able to use it in literary analysis to describe a protagonist's 'existential earnestness.' Furthermore, you should understand how shinken interacts with other high-level concepts like kakugo (resolve). Being shinken is the outward manifestation of having kakugo. You might also encounter it in historical texts or martial arts treatises, where its literal meaning (real sword) and metaphorical meaning (deadly seriousness) are intertwined.

At the C2 level, you have a masterly grasp of 真剣 (shinken) and can use it to convey profound sincerity or terrifying intensity. You understand its role in the Japanese psyche—the ideal of approaching every task, no matter how small, as if it were a life-or-death duel. You can use it in high-level creative writing to evoke a specific kind of tension in a scene. You are also aware of the word's potential for irony; in a post-modern context, one might describe someone as 'too shinken' to highlight a lack of flexibility or a tragic obsession. You can navigate the fine line between shinken, kinchou (tension), and shouchuu (concentration), choosing the exact word to describe the texture of human focus. Your usage reflects an understanding of the word's 'samurai spirit' heritage in a modern, globalized context.

Practice it Examples Notes & Tips

真剣な in 30 Seconds

Shinken-na means 'serious' or 'earnest,' focusing on intense concentration.
It originates from the term for a 'real sword' (not wooden).
It is a na-adjective, used with 'na' for nouns and 'ni' for verbs.
Commonly used in business, sports, and serious romantic contexts.

The Japanese word 真剣な (Shinken-na) is a powerful na-adjective that translates primarily to 'serious,' 'earnest,' or 'deadly serious.' While English uses 'serious' to cover everything from a grave illness to a lack of humor, shinken carries a specific weight derived from its literal roots. To understand its usage, one must look at the kanji: 真 (shin) meaning 'true' or 'real,' and 剣 (ken) meaning 'sword.' Historically, this referred to a real, sharp blade as opposed to a wooden practice sword (bokken). When a samurai drew a shinken, the situation was no longer a drill; it was a matter of life and death. This historical intensity survives in the modern word, implying a level of focus where one is 'all in.'

Core Concept: Absolute commitment and focus, as if one's life depended on the outcome.

彼は真剣な表情で地図を見つめていた。(He was staring at the map with a serious expression.)

You will hear this word in contexts ranging from romantic relationships to high-stakes business negotiations. Unlike majime (which describes a person's generally diligent or honest personality), shinken describes a state of mind or an approach to a specific task. If you are shinken about learning Japanese, you aren't just doing it for fun; you are putting in the sweat and tears required for mastery. It suggests a lack of playfulness or distraction.

Romantic Context: Used to describe 'serious dating' (shinken kousai), meaning the couple is considering marriage rather than just casual dating.

将来について真剣に話し合おう。(Let's talk seriously about the future.)

In sports, a 'shinken shoubu' is a match played for real, where neither side is holding back. It contrasts with a friendly or exhibition match. When someone says 'shinken na no?' they are asking, 'Are you for real?' or 'Are you actually serious about this?' It challenges the sincerity of the other person's intent. Because of its 'real sword' origin, there is an inherent respect attached to the word; being shinken is generally seen as a noble and necessary trait for success in Japanese culture.

Academic/Work Context: Describing a student or employee who is deeply focused on their research or project, ignoring all distractions.

遊びじゃない、これは真剣な戦いだ。(This isn't a game; this is a serious battle.)

Using 真剣な (Shinken-na) correctly requires understanding its role as a na-adjective. This means it takes 'na' when modifying a noun and 'ni' when acting as an adverb. It is rarely used to describe a 'serious problem' (where shinkoku or juudai is preferred); instead, it describes the human attitude toward that problem. If you say a situation is shinken, you are usually personifying the atmosphere or describing the people involved.

Modifying Nouns: [Na-Adjective] + な + [Noun]. Example: 真剣な態度 (A serious attitude).

彼女の真剣な眼差しに圧倒された。(I was overwhelmed by her serious gaze.)

When you want to describe how someone is performing an action, you switch to the adverbial form 真剣に (Shinken-ni). This is perhaps the most common way learners will use the word. Whether you are studying, playing a game, or listening to advice, doing it shinken-ni implies you are not joking around. It is the opposite of 'fuzakeru' (to mess around).

Adverbial Use: [Na-Adjective] + に + [Verb]. Example: 真剣に聞く (To listen seriously).

冗談抜きで、真剣に考えてみて。(Jokes aside, please think about it seriously.)

In the negative form, shinken dewa nai (not serious), it suggests a lack of commitment or a 'half-baked' effort. In Japanese society, being called 'not serious' (shinken-mi ga nai) can be a significant criticism, implying that you are wasting people's time or not respecting the gravity of the situation. It's often used by teachers to students or bosses to subordinates to encourage better focus.

Describing Mood: The word can describe the 'air' or 'vibe' of a room. 'Shinken na kuuki' (A serious atmosphere).

会議は終始、真剣な雰囲気で行われた。(The meeting was held in a serious atmosphere from start to finish.)

You will encounter 真剣な (Shinken-na) across all levels of Japanese society, but it is particularly prominent in media that dramatizes effort and conflict. In Shonen anime (like Naruto or Demon Slayer), characters often declare their 'shinken' intent before a battle or a training arc. It signifies a transition from their usual goofy selves to their warrior selves. This mirrors the word's origin: the transition from a wooden sword to a real one. In these contexts, the word is often shouted or whispered with great intensity.

Anime/Manga: Used when a character stops holding back. 'Ore wa shinken da!' (I am serious!).

「今のは練習じゃない、真剣勝負だ！」("That wasn't practice; this is a real duel!")

In the Japanese workplace, shinken is the standard for professionalism. During performance reviews or project kick-offs, managers will emphasize the need to take the task shinken-ni. It is not enough to just do the work; one must do it with a 'shinken na taido' (serious attitude). If a project fails, a common apology involves stating that one's 'shinken-mi' (level of seriousness) was insufficient. It is a word that bridges the gap between internal motivation and external results.

Business Etiquette: Demonstrating focus during a client's presentation is described as 'shinken ni mimi wo katamukeru' (listening seriously/intently).

彼は真剣に結婚相手を探している。(He is seriously looking for a marriage partner.)

Finally, in sports commentary, you will hear this word constantly. Whether it's a high school baseball tournament (Koshien) or an Olympic event, the commentators focus on the 'shinken na manazashi' (serious gaze) of the athletes. The word encapsulates the Japanese ideal of 'do' (the way), where the process and the mental state are just as important as the victory itself. To be shinken is to honor the sport and the opponent by giving 100% of your being.

Sports Journalism: Athletes are praised for their 'shinken-sa' (seriousness) during training sessions.

そんなに真剣にゲームしなくてもいいのに。(You don't have to play the game so seriously.)

The most frequent mistake English speakers make with 真剣な (Shinken-na) is confusing it with 真面目 (Majime). While both translate to 'serious,' they function differently. Majime is a personality trait—someone who is honest, reliable, and follows the rules. Shinken is a state of intensity or focus. You can be a generally lazy person (not majime) who suddenly becomes shinken when playing a video game. Conversely, a majime person might not be shinken about a specific task if they find it easy or unimportant.

Majime vs. Shinken: Majime = Character/Personality (Diligence). Shinken = Momentary focus/Intensity (Earnestness).

✕ 彼は真剣な学生です。(He is a serious student - meaning he never skips class. Use 'majime' here.)

Another mistake is using shinken to describe a 'serious situation' like a car accident or a global crisis. In these cases, Japanese uses 深刻な (Shinkoku-na) or 重大な (Juudai-na). Shinken is almost always about the intent or attitude of a person. If you say 'shinken na mondai,' it sounds like the problem itself has a serious mind. Use shinkoku when the situation is grave or distressing.

Situation vs. Attitude: Shinkoku = Grave/Severe (Situations). Shinken = Earnest/Intense (People/Attitudes).

✕ 環境汚染は真剣な問題だ。(Pollution is a serious problem. Use 'shinkoku' or 'juudai'.)

A subtle error involves the use of 'shinken' versus 'honki.' Honki (real intention/spirit) is more colloquial and often used for 'Are you serious?' in a 'Are you kidding me?' sense. Shinken is more formal and implies a disciplined focus. While they are often interchangeable, shinken sounds more like a warrior's resolve, while honki sounds like a personal conviction. Using shinken in a very casual, lighthearted conversation can sometimes sound overly dramatic or 'chuunibyou' (acting like an anime character).

Register Mistake: Using 'shinken' for trivial matters (like choosing a pizza topping) can sound sarcastic or weirdly intense.

✓ 彼は真剣に怒っている。(He is truly/seriously angry.)

To master 真剣な (Shinken-na), you must see how it fits into the ecosystem of 'seriousness' in Japanese. There are several words that overlap, but each has a distinct flavor. Understanding these nuances will make your Japanese sound much more natural and precise. The most common alternatives are 真面目 (Majime), 本気 (Honki), 深刻 (Shinkoku), and 一生懸命 (Isshoukenmei).

真面目 (Majime): Focuses on character. A 'majime' person is reliable, follows rules, and doesn't cut corners. You describe a student who does their homework every day as 'majime.'

彼はとても真面目な社員だ。(He is a very diligent employee.)

本気 (Honki) is the word for 'real intent.' It is often used to contrast with 'playing around' or 'lying.' When you ask 'Honki?' you are asking 'Are you for real?' or 'Do you really mean that?' It is more about the internal truth of one's feelings than the external intensity of one's focus. Shinken is like the 'warrior' version of honki.

本気 (Honki): Focuses on sincerity and intent. 'Honki de suki' means 'I truly love you' (not just a crush).

今度は本気でダイエットするぞ！(This time I'm seriously going on a diet!)

For situations that are 'serious' in the sense of being 'grave' or 'dangerous,' 深刻 (Shinkoku) is the correct choice. This is used for social issues, illnesses, or critical errors. While shinken is positive (showing focus), shinkoku is usually negative (showing a worrying state). Finally, 一生懸命 (Isshoukenmei) is an adverbial phrase meaning 'with all one's might.' It describes the physical or mental effort being expended.

Comparison Table

Shinken: Sharp focus/earnestness (The Warrior's Mind).
Majime: Diligence/Reliability (The Student's Character).
Honki: Sincerity/Real Intent (The Heart's Truth).
Shinkoku: Gravity/Severity (The Situation's Weight).

事態は深刻だ。(The situation is serious/grave.)

How Formal Is It?

Fun Fact

The transition from 'real sword' to 'serious' happened because practicing with a real sword meant any mistake could be fatal, requiring absolute focus.

Pronunciation Guide

UK ɕiŋkeɴ

US ɕiŋkeɴ

Flat (Heiban) pitch accent: shi-N-KE-N.

Rhymes With

Inden Kinden Sinken Tanken Hanken Manken Rinken Zinken

Common Errors

Pronouncing 'shin' like the English 'shin' (leg part). In Japanese, the 'i' is shorter.
Making the 'n' too heavy. It should be a light nasal closure.
Forgetting the 'na' when modifying nouns.

Difficulty Rating

Reading 3/5

Kanji are common but require knowing the 'sword' radical.

Writing 4/5

The kanji for 'Ken' (sword) has several strokes.

Speaking 2/5

Easy to pronounce and very useful.

Listening 2/5

Clear pronunciation, often emphasized in speech.

What to Learn Next

Prerequisites

真 (True) 剣 (Sword) 顔 (Face) 話 (Talk) 考える (Think)

Learn Next

深刻 (Grave) 慎重 (Cautious) 誠実 (Sincere) 覚悟 (Resolve) 必死 (Desperate)

Advanced

真摯 (Shinshi) 不撓不屈 (Indomitable) 切磋琢磨 (Mutual improvement) 一意専心 (Single-mindedness) 精進 (Diligence)

Grammar to Know

Na-Adjective + な + Noun

真剣な人 (A serious person)

Na-Adjective + に + Verb

真剣に考える (To think seriously)

Adjective + すぎる (Too much)

真剣すぎる (Too serious)

Adjective + そう (Looks like)

真剣そうだ (Looks serious)

Adjective + になる (Become)

真剣になる (To become serious)

Examples by Level

彼は真剣な顔をしています。

He has a serious face.

真剣な (na-adjective) + 顔 (noun)

私は真剣です。

I am serious.

Subject + は + 真剣 + です

真剣に勉強します。

I will study seriously.

真剣に (adverb) + 勉強します (verb)

これは真剣な話です。

This is a serious talk.

真剣な (na-adjective) + 話 (noun)

真剣に聞いてください。

Please listen seriously.

真剣に (adverb) + 聞いてください (polite request)

彼女は真剣な人です。

She is a serious person.

真剣な (na-adjective) + 人 (noun)

冗談じゃない、真剣だ。

It's not a joke; I'm serious.

真剣 (noun-like use in casual speech)

もっと真剣になって。

Please become more serious.

真剣に + なって (te-form of naru)

真剣に練習しないと勝てません。

If you don't practice seriously, you can't win.

真剣に + 練習しない (negative conditional)

彼は真剣な眼差しで私を見た。

He looked at me with a serious gaze.

真剣な + 眼差し (noun)

真剣に将来のことを考えよう。

Let's think seriously about the future.

真剣に + 考えよう (volitional form)

あの二人は真剣に付き合っている。

Those two are dating seriously.

真剣に + 付き合っている (progressive state)

先生は真剣な態度で教えた。

The teacher taught with a serious attitude.

真剣な + 態度 (noun)

仕事に真剣に取り組む。

To engage in work seriously.

Noun + に + 真剣に + 取り組む

真剣な質問があります。

I have a serious question.

真剣な + 質問 (noun)

彼は真剣に怒っているようだ。

It seems he is seriously angry.

真剣に + 怒っている + ようだ (appearance)

真剣交際を申し込むことにした。

I decided to ask for a serious relationship.

真剣交際 (compound noun) + を + 申し込む

遊び半分ではなく、真剣にやってくれ。

Don't do it half-heartedly; do it seriously.

遊び半分 (half-play) + ではなく (negation)

彼の真剣な言葉に心を打たれた。

I was moved by his earnest words.

真剣な + 言葉 (noun) + に + 心を打たれた

これは単なるゲームではなく、真剣勝負だ。

This isn't just a game; it's a real duel.

真剣勝負 (idiomatic compound noun)

真剣な議論を交わすことが必要だ。

It is necessary to have a serious discussion.

真剣な + 議論 (noun) + を交わす

彼女は真剣に悩んでいるようだ。

She seems to be seriously troubled.

真剣に + 悩んでいる (progressive state)

もっと真剣に人生と向き合うべきだ。

You should face life more seriously.

真剣に + 向き合う + べきだ (should)

彼の目には真剣な色が浮かんでいた。

A look of seriousness appeared in his eyes.

真剣な + 色 (metaphorical color/look)

このプロジェクトには真剣味が足りない。

This project lacks seriousness.

真剣味 (seriousness as a noun) + が足りない

彼は真剣そのものの表情で立ち向かった。

He faced it with an expression of pure seriousness.

真剣 + そのもの (the very essence of)

真剣に検討した結果、辞退することにしました。

After serious consideration, I decided to decline.

真剣に + 検討した (past tense) + 結果

冗談を言っている場合ではない、真剣な事態だ。

This is no time for jokes; it's a serious situation.

場合ではない (not the situation for)

彼は真剣に研究に没頭している。

He is seriously immersed in his research.

真剣に + 没頭している (immersed in)

その俳優の真剣な演技に観客は静まり返った。

The audience fell silent at the actor's earnest performance.

真剣な + 演技 (noun)

真剣に取り組まなければ、目標は達成できない。

Unless you work seriously, you cannot achieve your goal.

真剣に + 取り組まなければ (negative conditional)

彼女の真剣な訴えが、ついに社長を動かした。

Her earnest appeal finally moved the president.

真剣な + 訴え (appeal/plea)

真剣勝負の場において、迷いは禁物である。

In a real duel, hesitation is forbidden.

真剣勝負 + の場 (in the place of)

彼は真剣な眼差しの中に、微かな不安を滲ませていた。

In his serious gaze, a faint anxiety seeped through.

滲ませる (to let seep/show through)

芸術に対して真剣であればあるほど、苦悩も深くなる。

The more serious one is about art, the deeper the suffering.

～であればあるほど (the more... the more...)

その議論は、真剣味を帯びて白熱していった。

The discussion took on a serious tone and grew heated.

真剣味を帯びる (to take on a serious air)

真剣に生きることの難しさを、彼は痛感していた。

He felt deeply the difficulty of living earnestly.

真剣に生きること (nominalized phrase)

彼が真剣なのは分かるが、少し柔軟性に欠ける。

I know he's serious, but he lacks a bit of flexibility.

真剣なのは (nominalized adjective)

真剣な眼差しで、彼は古文書を紐解いた。

With a serious gaze, he unraveled the ancient documents.

紐解く (to read/unravel/research)

真剣に語り合うことで、相互理解が深まった。

Mutual understanding deepened by talking together earnestly.

語り合う (to talk together)

真剣な面持ちで、彼は最後の一手に全てを賭けた。

With a serious countenance, he bet everything on the final move.

真剣な + 面持ち (countenance/expression)

真剣そのものの精神状態こそが、極限の美を生む。

A mental state of pure earnestness is what gives birth to extreme beauty.

極限の美 (extreme beauty)

彼の真剣さは、時に周囲を威圧するほどの重圧となった。

His seriousness sometimes became a pressure that intimidated those around him.

威圧する (to intimidate)

真剣に事態を打開しようとする彼の姿勢は、賞賛に値する。

His posture of trying earnestly to break the deadlock is worthy of praise.

賞賛に値する (worthy of praise)

真剣な思索の果てに、彼は一つの真理に到達した。

At the end of serious contemplation, he arrived at a single truth.

思索の果てに (at the end of contemplation)

真剣勝負を挑む者は、己の生を削る覚悟が必要だ。

Those who challenge a real duel need the resolve to shave away their own life.

生を削る (to shave away life/sacrifice oneself)

真剣な眼差しの裏側には、底知れぬ孤独が潜んでいた。

Behind the serious gaze, an unfathomable loneliness was hidden.

底知れぬ (unfathomable)

真剣に挑むことの尊さを、次世代に語り継ぐべきだ。

The nobility of challenging things earnestly should be passed down to the next generation.

語り継ぐ (to pass down through stories)

Common Collocations

真剣な表情

真剣に考える

真剣に取り組む

真剣勝負

真剣交際

真剣な眼差し

真剣な議論

真剣な態度

真剣味がある

真剣に聞く

Common Phrases

真剣にやって！

— Do it seriously! (Often used by coaches or teachers).

もっと真剣にやって！

真剣な話がある

— I have something serious to talk about (usually prefaces a big confession).

ちょっと真剣な話があるんだけど。

真剣そのもの

— The very picture of seriousness; completely focused.

彼の様子は真剣そのものだった。

真剣に怒る

— To be truly angry, not just annoyed.

母が真剣に怒った。

真剣に悩む

— To be deeply troubled or worried.

進路について真剣に悩む。

真剣に付き合う

— To date with a serious intent (like marriage).

彼女と真剣に付き合いたい。

真剣に探す

— To look for something with great effort.

鍵を真剣に探す。

真剣な顔つき

— A serious look on one's face.

真剣な顔つきで戻ってきた。

真剣に祈る

— To pray earnestly.

合格を真剣に祈る。

真剣に笑う

— To laugh genuinely/hard (less common, but used for 'serious laughter').

真剣に笑い転げた。

Often Confused With

真剣な vs 真面目

Majime is about personality/reliability; Shinken is about focus/intensity.

真剣な vs 深刻

Shinkoku is for grave/worrying situations; Shinken is for earnest attitudes.

真剣な vs 本気

Honki is 'real intent'; Shinken is 'intense focus'.

Idioms & Expressions

"真剣勝負"

— A fight with real swords; a game played for real stakes.

ここからは真剣勝負だ。

Common

"真剣に耳を傾ける"

— To listen with the utmost attention.

国民の声に真剣に耳を傾ける。

Formal

"真剣みを帯びる"

— To take on a serious or earnest tone.

話し合いが真剣みを帯びてきた。

Formal

"真剣を抜く"

— To draw a real sword (literal); to get serious (metaphorical).

彼はついに真剣を抜いた。

Literary

"真剣に立ち向かう"

— To face a challenge with full earnestness.

困難に真剣に立ち向かう。

Neutral

"真剣に打ち込む"

— To devote oneself entirely to something.

テニスに真剣に打ち込む。

Neutral

"真剣な眼差しを向ける"

— To direct a serious gaze toward someone.

子供に真剣な眼差しを向ける。

Neutral

"真剣に受け止める"

— To take something to heart or take it seriously.

批判を真剣に受け止める。

Formal

"真剣にぶつかる"

— To clash or engage with someone with full sincerity.

ライバルと真剣にぶつかる。

Neutral

"真剣に語る"

— To speak earnestly about something.

夢を真剣に語る。

Neutral

Easily Confused

真剣な vs 重大 (Juudai)

Both mean serious.

Juudai means 'important' or 'heavy consequences.' Shinken means 'earnest' or 'focused.'

重大なニュース (Important news) vs 真剣な顔 (Serious face).

真剣な vs 懸命 (Kenmei)

Both imply trying hard.

Kenmei (often Isshoukenmei) is about effort. Shinken is about the mental state/attitude.

懸命に走る (Running with all might) vs 真剣に考える (Thinking seriously).

真剣な vs 真面目 (Majime)

Both translate to serious.

Majime is a character trait (honest/diligent). Shinken is a situational focus.

真面目な人 (An honest person) vs 真剣な試合 (A serious match).

真剣な vs 厳粛 (Genshuku)

Both mean serious/solemn.

Genshuku is for formal, solemn ceremonies. Shinken is for personal earnestness.

厳粛な式典 (A solemn ceremony) vs 真剣な議論 (A serious discussion).

真剣な vs 熱心 (Nesshin)

Both mean focused.

Nesshin is enthusiastic/eager. Shinken is earnest/grave.

熱心なファン (Enthusiastic fan) vs 真剣な相談 (Serious consultation).

Sentence Patterns

私は[Noun]に真剣です。

私は日本語に真剣です。

真剣に[Verb]てください。

真剣に聞いてください。

[Noun]は真剣な[Noun]だ。

これは真剣な問題だ。

真剣に[Verb]た結果、[Result]。

真剣に考えた結果、やめることにした。

真剣であればあるほど、[Result]。

真剣であればあるほど、緊張する。

真剣そのものの[Noun]で[Action]。

真剣そのものの表情で立ち向かった。

真剣に[Verb]ているところだ。

真剣に練習しているところだ。

真剣味に欠ける[Noun]。

真剣味に欠ける態度。

Word Family

Nouns

真剣 (Shinken - Seriousness)

真剣味 (Shinken-mi - Degree of seriousness)

Verbs

真剣になる (Shinken ni naru - To become serious)

Adjectives

真剣な (Shinken-na - Serious)

本気 (Honki)

真面目 (Majime)

深刻 (Shinkoku)

真摯 (Shinshi)

剣 (Ken)

How to Use It

frequency

Common in all registers.

Common Mistakes

Using 'shinken' for 'majime'. → Kare wa majime na gakusei desu.
Majime is for general character; Shinken is for focus on a task.
Using 'shinken' for serious accidents. → Shinkoku na jiko.
Shinken is for human attitude, not the gravity of an event.
Saying 'shinken no' + noun. → Shinken na hito.
It's a na-adjective, so it needs 'na' to modify a noun.
Using 'shinken' for 'important'. → Juudai na kaigi.
If the meeting is important, use 'juudai.' If the people are focused, use 'shinken'.
Confusing 'shinken' with 'shinkansen'. → Shinken vs Shinkansen.
One is 'serious,' the other is the 'bullet train.' Don't mix them up!

Tips

Na vs Ni

Remember: 'Shinken na' + Noun (a serious person), 'Shinken ni' + Verb (to study seriously).

The Warrior Mindset

Always keep the 'real sword' image in mind. It helps you feel the intensity of the word compared to 'majime'.

Dating Tip

Using 'shinken' in a romantic context is a very strong signal of commitment in Japan.

Professionalism

Show 'shinken-mi' (seriousness) in meetings by maintaining eye contact and taking notes.

Shonen Vibes

When a character says 'Ore wa shinken da,' expect the fight to get much more intense!

Avoid 'Shinken no'

It's a na-adjective, so 'shinken no hanashi' is incorrect. Use 'shinken na hanashi'.

Synonym Choice

Use 'shinkoku' for problems that make you worry, and 'shinken' for tasks that make you focus.

Pitch Accent

Japanese pitch is flat for this word. Don't stress any syllable too hard.

Kanji Practice

The kanji for 'Shin' (真) is very common. Practice it alongside 'Shinjitsu' (Truth).

Sword Focus

Visualize a samurai. A samurai with a real sword is always 'shinken'.

Memorize It

Mnemonic

Think of a samurai holding a SHARP (Shin) sword (Ken). If he isn't serious, he gets cut. SHIN-KEN = Sharp Sword Serious.

Visual Association

Imagine a student studying with a katana on their desk. They have to be 'Shinken' or they might knock the sword over!

Word Web

Sword Focus Earnest Samurai Battle Dating Work Focus

Challenge

Try to spend 10 minutes studying Japanese 'shinken-ni' (with no phone or distractions) today.

Word Origin

Composed of 'Shin' (真 - True/Real) and 'Ken' (剣 - Sword). It originally referred to a sharp steel sword used in combat.

Original meaning: A real, sharp sword used by samurai, as opposed to a wooden 'bokken' or bamboo 'shinai' used for training.

Sino-Japanese (Kango).

Cultural Context

Calling someone 'not shinken' is a direct criticism of their effort and can be offensive in a professional setting.

English speakers often use 'serious' for both mood and personality. Japanese splits this into 'shinken' (mood/focus) and 'majime' (personality).

Shinken Red (from the Super Sentai series 'Shinkenger'). The phrase 'Shinken Shoubu' in martial arts movies. Dating apps in Japan often have a 'Shinken' mode for marriage seekers.

Practice in Real Life

Real-World Contexts

Education

真剣に勉強する
真剣な態度
試験に真剣に臨む
先生の真剣な話

Business

真剣に検討する
真剣な議論
仕事に真剣に取り組む
真剣なプレゼン

Romance

真剣に付き合う
真剣な告白
将来を真剣に考える
真剣交際

Sports

真剣勝負
真剣な練習
真剣な眼差し
真剣に戦う

Daily Life

真剣に怒る
真剣に悩む
真剣に探す
真剣に聞く

Conversation Starters

"最近、何か真剣に取り組んでいることはありますか？ (Is there anything you've been working on seriously lately?)"

"日本語の勉強を真剣に始めたきっかけは何ですか？ (What made you start studying Japanese seriously?)"

"将来について真剣に考えたことがありますか？ (Have you ever thought seriously about your future?)"

"真剣勝負をしたことがありますか？ (Have you ever had a real, serious duel/match?)"

"真剣な話をする時、どこで話すのが一番いいと思いますか？ (When having a serious talk, where do you think is the best place?)"

Journal Prompts

今日、自分が一番真剣になった瞬間について書いてください。 (Write about the moment you were most serious today.)

あなたが真剣に尊敬している人は誰ですか？その理由も教えてください。 (Who is someone you seriously respect? Please tell me why.)

「真剣に生きる」とはどういうことだと思いますか？ (What do you think it means to 'live earnestly'?)

子供の頃、真剣に信じていたことは何ですか？ (What is something you seriously believed in as a child?)

これから真剣にやってみたい新しい趣味は何ですか？ (What is a new hobby you want to try seriously from now on?)

Frequently Asked Questions

10 questions

No, for a serious illness, you should use 'omoi' (heavy/serious) or 'shinkoku' (grave). 'Shinken' describes a person's attitude, not the severity of a disease. For example, 'Kare wa shinken ni byouki to tatakatte iru' (He is seriously fighting the illness) is okay because it describes his attitude.

'Honki' means 'real intention' and is often used in casual settings like 'Honki?' (Are you serious?). 'Shinken' is more formal and implies a disciplined, warrior-like focus. You can use 'honki' for emotions and 'shinken' for tasks.

Usually, yes, as it shows dedication. However, being 'too shinken' (shinken-sugiru) can be seen as a negative if it makes a person rigid, humorless, or unable to adapt to casual situations.

You wouldn't call a movie 'shinken.' You might call it 'shinkoku' (grave/heavy) or 'omoi.' However, you can say the actors' performance was 'shinken' (earnest).

You can say 'Shinken da yo!' or 'Honki da yo!' Both work, but 'Honki' is slightly more common in daily conversation for this specific purpose.

It is a term used in dating that means 'dating with the intention of marriage.' It is a step above casual dating.

It is a 'na-adjective' (adjectival noun). It can function like a noun in some compounds, but usually requires 'na' or 'ni'.

Literally 'a match with real swords.' It means a contest where both sides are doing their absolute best with no holding back.

Yes! You can say a child is 'shinken' when they are very focused on a drawing or a game. It's often used as a compliment.

Yes, 'ken' (剣) is another word for sword. 'Shinken' (真剣) literally means 'real sword,' as opposed to a wooden one.