Meaning
The kanji 武 carries the core meanings of military, martial, brave, and warrior. Few characters in Japanese are as culturally loaded — 武 runs through samurai tradition, martial arts philosophy, and feudal history alike. You will find it in vocabulary related to warfare, combat, weapons, and the warrior's way of life.
Etymologically, 武 is a compound ideograph built from two elements: 止 (とめる, to stop) and 戈 (か, halberd or spear). Combining a weapon with the act of stopping might seem odd at first. Yet the classical interpretation cuts deeper: the highest expression of martial virtue is the ability to stop conflict altogether. True mastery of 武 is not a capacity for violence — it is the wisdom and discipline to prevent it. That idea forms the ethical core of bushido (武士道), the samurai code of conduct.
Visually, the character shows a foot or footprint (止) planted firmly beside a halberd (戈). The warrior stands ready, yet knows when to advance and when to hold back — strength tempered by restraint.
武 consists of 8 strokes and is a Grade 4 Joyo kanji, introduced in the fourth year of Japanese elementary school. Its radical is 止 (stop).
Readings
On'yomi (音読み) — Chinese-derived readings
武 has two on'yomi readings: ブ (Bu) and ム (Mu). ブ dominates everyday vocabulary, appearing across martial, military, and cultural compounds. ム is rare, surfacing mainly in historical place names and personal names from classical Japan.
ブ (Bu) — common reading:
- 武道 (budō) — martial arts; literally "the way of martial virtue"; encompasses judo, kendo, aikido, and more
- 武士 (bushi) — samurai, warrior; the professional warrior class of feudal Japan
- 武器 (buki) — weapon, arms; any instrument used in combat
- 武力 (buryoku) — military force, armed power
ム (Mu) — rare reading, mainly proper nouns:
- 武蔵 (Musashi) — historical province covering modern Tokyo and Saitama; also the name of the legendary swordsman Miyamoto Musashi
- 天武 (Tenmu) — Emperor Tenmu, a 7th-century Japanese emperor known for consolidating imperial rule
Kun'yomi (訓読み) — Native Japanese readings
The kun'yomi reading of 武 is たける (takeru), meaning to be fierce, brave, or powerfully strong. Used almost exclusively in proper names, it evokes raw martial strength and valor.
- 武 (Takeru) — a masculine given name meaning "brave one" or "the fierce warrior"
- 武田 (Takeda) — one of the most powerful samurai clans of the Sengoku period; associated with the legendary general Takeda Shingen
- 日本武尊 (Yamato Takeru no Mikoto) — a legendary prince in Japanese mythology known for remarkable warrior prowess
Common Words & Compounds
武 appears across a wide range of compound vocabulary — martial arts, military affairs, samurai culture, and social history. The groupings below cover the most essential and commonly tested terms.
Martial Arts & the Way of the Warrior
- 武道 (budō) — martial arts; the philosophical and physical path of the warrior; includes judo, kendo, karate, and aikido
- 武士道 (bushidō) — the way of the samurai; the ethical code governing loyalty, honor, discipline, and courage
- 武術 (bujutsu) — martial techniques; refers to traditional combat methods practiced before modern budo reforms
- 武勇 (buyū) — military valor, bravery in battle; a quality held in high esteem among the samurai class
Military Power & Arms
- 武器 (buki) — weapon, arms; used for any instrument of combat from swords to firearms
- 武力 (buryoku) — military force, armed power; strength based on weapons and armies
- 武装 (busō) — armament, being armed; the condition of carrying weapons or military equipment
- 武将 (bushō) — military commander, warlord; a general or leader of an armed force, especially in the Sengoku era
Social & Cultural Terms
- 武士 (bushi) — samurai; the warrior class that formed the foundation of feudal Japanese society for centuries
- 武家 (buke) — samurai household or clan; the warrior class as a social institution distinct from the aristocracy and commoners
- 武骨 (bukotsu) — rough, boorish, unsophisticated; describes someone blunt and unpolished in manner
- 文武 (bunbu) — literary and martial arts; the classical ideal of mastering both scholarship and combat skill; often seen in 文武両道 (bunbu ryōdō)
Example Sentences
武道は日本の伝統的な文化です。
Budō wa Nihon no dentōteki na bunka desu.
Martial arts are a traditional part of Japanese culture.
あの武士は非常に勇敢でした。
Ano bushi wa hijō ni yūkan deshita.
That samurai was extremely brave.
武器を持って戦うのは危険です。
Buki wo motte tatakau no wa kiken desu.
Fighting while carrying weapons is dangerous.
武力で問題を解決することはできません。
Buryoku de mondai wo kaiketsu suru koto wa dekimasen.
Problems cannot be resolved through military force.
彼女は武術を十年間練習してきました。
Kanojo wa bujutsu wo jūnenkan renshū shite kimashita.
She has been practicing martial arts for ten years.
日本の武士道は世界中で尊敬されています。
Nihon no bushidō wa sekaijū de sonkei sarete imasu.
Japan's bushido is respected all around the world.
その城は有名な武将によって建てられました。
Sono shiro wa yūmei na bushō ni yotte tateraremashita.
That castle was built by a famous military commander.
平和のためには武装解除が必要です。
Heiwa no tame ni wa busō kaijo ga hitsuyō desu.
Disarmament is necessary for the sake of peace.
文武両道を目指して毎日努力しています。
Bunbu ryōdō wo mezashite mainichi doryoku shite imasu.
I work hard every day aiming to excel in both academic and martial pursuits.
武家の出身である彼は礼儀を大切にします。
Buke no shusshin de aru kare wa reigi wo taisetsu ni shimasu.
Coming from a samurai family, he places great importance on etiquette.
Memory Tip
Picture a warrior's foot (止) planted firmly beside a raised spear (戈). The warrior has stopped — not retreated — and stands in composed readiness. That image captures 武 in one frame: not reckless aggression, but disciplined strength with the judgment to know when not to strike. The foot beside the spear belongs to someone who has conquered not just enemies, but themselves.