Samurai Vocabulary in Japanese: 侍, 武士, 浪人 and Sword Idioms

Samurai is written 侍 and comes from an old verb meaning "to serve"; the more formal word for the warrior class is bushi (武士), and many samurai words, such as rōnin and shinken, are still used in modern Japanese with new meanings.

What you need to know

Samurai Vocabulary in Japanese: 侍, 武士, 浪人 and Sword Idioms

Samurai films, games and dramas have carried a handful of Japanese words around the world: samurai, katana, shogun, ronin, harakiri. Each has a precise meaning in Japanese that is a little different from its use in English, and a few would surprise the warriors themselves. A rōnin today is a teenager studying to retake university entrance exams. The speech style that fictional samurai use, with sessha for "I" and de gozaru at the end of sentences, is a stage convention that nobody uses in real life. Meanwhile, idioms born from sword fighting are alive in offices and schools. This guide sorts the vocabulary into what is historical, what is theatrical and what you can say today.

Samurai comes from a verb meaning "to serve"; bushi is the formal term

Seppuku and harakiri are the same two kanji in opposite order

Sessha and de gozaru are period-drama speech, not modern Japanese

Rōnin now means a student retaking entrance exams

Samurai or bushi: two words for the warrior

The word samurai grew out of saburau, an old verb meaning "to serve" or "to attend on someone". A samurai was, first of all, a man in service to a lord. Bushi is built from bu (武), "military", and shi (士), a man of rank, and names the warrior class itself.

In English, samurai covers everything. In Japanese the two words have different flavours: samurai is the vivid word of stories, bushi the careful word of textbooks. The cards give the four terms that learners most often ask about.

Four picture cards in a row showing the Japanese words for samurai, sword, shogun and a masterless samurai, each with its reading
Four words that English borrowed from Japanese, shown with their kanji and original meanings.
JapaneseRomajiMeaning
侍samuraisamurai: one who serves
刀katanasword
将軍shōgunshogun, supreme general
浪人rōninmasterless samurai
武士bushiwarrior (the formal term)
大名daimyōfeudal lord of a domain
殿tonolord (as his retainers said it)

Ranks and roles: shōgun, daimyō, tono, rōnin

Shōgun (将軍) means "general": shō is "commander" and gun is "army". The title is short for seii taishōgun (征夷大将軍), and for centuries the shōgun was the military ruler of the country. Below him, the daimyō (大名) were the lords who governed their own domains.

Retainers called their lord tono (殿) or tonosama. The same kanji, read dono, is still used after names on certificates and formal notices, where it is a stiff, official kind of "Mr" or "Ms". You will read it far more often than you will hear it.

A samurai who lost his master, through the lord's death or disgrace, became a rōnin (浪人). The first kanji means "wave", and the word suggests a person who drifts. Fiction loves the wandering rōnin, and the modern meaning of the word keeps the idea of someone between places.

Seppuku and harakiri: the same kanji, two readings

Both words are written with the kanji for "cut" (切) and "belly" (腹). Seppuku puts them in the Chinese order and reads them with on readings, the sounds that came from Chinese. Harakiri puts belly first and uses kun readings, the native Japanese words hara and kiri.

This is a pattern across the whole language. On-reading compounds sound formal and technical, and kun-reading words sound plain and physical. So seppuku is the term used in history books and formal speech, while harakiri is the blunt everyday version, and the one that happened to travel abroad. It is a grim historical subject, and Japanese people do not joke about it lightly.

JapaneseRomajiMeaning
切腹seppukuritual suicide (formal term)
腹切りharakiribelly-cutting (plain term)

Period-drama speech: sessha and de gozaru

Historical dramas are called jidaigeki (時代劇), and they have their own dialect. A samurai character calls himself sessha (拙者), a humble "I" that literally means "clumsy person", and ends his sentences with de gozaru. Fans of the swordsman Kenshin in Rurouni Kenshin will know both. This is the samurai branch of the stock speech styles that Japanese fiction gives to its character types.

JapaneseRomajiMeaning
拙者sesshaI (humble, samurai speech)
でござるde gozaruam, is, are (archaic)
かたじけないkatajikenaiI am most grateful (archaic)
おぬしonushiyou (archaic)
御意gyoias you wish, my lord (archaic)
拙者は田中でござる。Sessha wa Tanaka de gozaru.I am Tanaka. (period drama)
私は田中です。Watashi wa Tanaka desu.I am Tanaka. (modern polite)

Nobody speaks like this today. Say de gozaru in a shop and people will smile and assume you learned Japanese from anime. One piece did survive, however. Gozaimasu, the very polite ending in arigatō gozaimasu and ohayō gozaimasu, comes from the same gozaru.

Sword idioms that people still use

The samurai are gone, but their swords are still in the language. These expressions appear in newspapers, offices and classrooms.

JapaneseRomajiMeaning
真剣勝負shinken shōbua contest in deadly earnest
真剣にshinken niseriously, in earnest
太刀打ちできないtachiuchi dekinaito be no match for
切羽詰まるseppa tsumaruto be driven into a corner
抜き打ちnukiuchiwithout warning, surprise
元の鞘に収まるmoto no saya ni osamaruto get back together

Shinken (真剣) is a real sword, as opposed to a wooden one, and from that came the everyday adjective for "serious". Tachiuchi is crossing swords, tachi being a long sword, so being unable to do it means the opponent is out of your league.

Seppa are the small metal washers on each side of the sword guard. The usual explanation is that when they jam, the blade cannot be drawn, and you are stuck. Nukiuchi is drawing and striking in a single motion, before the other person is ready. Moto no saya ni osamaru, "to settle back into the original scabbard", is said of a couple who separate and then reunite.

The idioms in sentences you can say

All of these are at a normal polite level and have nothing warlike about them in modern use.

JapaneseRomajiMeaning
真剣に考えています。Shinken ni kangaete imasu.I'm thinking about it seriously.
あの人には太刀打ちできません。Ano hito ni wa tachiuchi dekimasen.I'm no match for that person.
今日、抜き打ちテストがありました。Kyō, nukiuchi tesuto ga arimashita.We had a pop quiz today.
切羽詰まって、友達に相談しました。Seppa tsumatte, tomodachi ni sōdan shimashita.At my wits' end, I asked a friend for advice.

Rōnin today: the student between exams

Ask a Japanese eighteen-year-old about rōnin and you will hear about exams, not swords. A student who fails to enter the university they want, and spends the next year preparing to try again, is a rōnin or rōninsei. The verb is rōnin suru. One extra year is ichirō and two years is nirō.

The opposite is gen'eki (現役), literally "active duty", which describes a student who enters straight from high school. The humour of the samurai image is still felt: the student, like the warrior, belongs to no institution for a while.

JapaneseRomajiMeaning
浪人生rōninseistudent retaking entrance exams
今、浪人しています。Ima, rōnin shite imasu.I'm retaking my entrance exams.
一浪しました。Ichirō shimashita.I took one extra year to get in.
現役gen'ekistraight from high school

Parts of the sword, for museums and games

Castle museums and many games label sword parts in Japanese. Katana is the general word for a single-edged sword, and nihontō (日本刀), "Japanese sword", is the term used for the craft as a whole. Knowing saya and tsuba also makes the idioms above easier to picture.

JapaneseRomajiMeaning
日本刀nihontōJapanese sword
鞘sayascabbard
鍔tsubasword guard
柄tsukahilt, handle
刃hacutting edge
Key points

A practical way to improve

Use the old words for reading and the living idioms for speaking. First, read the core nouns aloud, taking care with long vowels: shōgun, daimyō, rōnin. Second, make one true sentence each with shinken ni and tachiuchi dekimasen, for example about a hobby you take seriously and a rival you cannot beat. Third, in Unihongo's immersive 3D classroom, ask your AI Sensei to play a friend who has just watched a period drama, and explain in modern polite Japanese what three words from it mean; the session report afterwards lists corrections, vocabulary and grammar. Then choose a long vowel drill in the pronunciation lab, since ro-nin and rōnin are not the same word to a Japanese ear.

  1. 1

    Choose one clear goal

    Focus each session on a situation or skill you can actually use.

  2. 2

    Practice actively

    Say complete answers aloud instead of only reading or recognizing Japanese.

  3. 3

    Review and repeat

    Keep useful corrections and revisit the same skill until it feels natural.

FAQ

Frequently asked questions

What is the difference between samurai and bushi?

Both refer to Japan's warriors. Bushi (武士) is the more formal and historical term for the warrior class as a whole. Samurai (侍) began as a word for those who served a lord and became the popular general word. History books tend to say bushi.

Is it seppuku or harakiri?

Both are real Japanese. Seppuku (切腹) uses the Chinese-style readings of the kanji for "cut" and "belly" and is the formal term. Harakiri (腹切り) reverses the kanji and uses the native readings, which makes it the plainer, more colloquial word. Japanese speakers normally say seppuku.

Does anyone say de gozaru in Japan today?

Only as a joke or when imitating a samurai. De gozaru is an old polite form of "to be" that survives in period dramas and anime. Its descendant is very much alive, though: gozaimasu, as in arigatō gozaimasu, comes from the same word.

What does rōnin mean today?

In modern Japanese a rōnin (浪人) is usually a student who did not get into the university of their choice and is spending a year studying to try again. The historical meaning, a samurai without a master, is known from films and history lessons.

What does shinken shōbu mean?

Shinken shōbu (真剣勝負) means a contest fought in complete seriousness. Shinken is literally a real sword, as opposed to a wooden or bamboo practice sword, so the image is a duel with live blades. Today it is used for sports, exams and business.

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