Meaning
The kanji 能 is a highly versatile and significant character in Japanese, primarily conveying the idea of "ability," "skill," "talent," or "capacity." It refers to what one is capable of doing, encompassing innate talent, learned skills, and the functional capacity of machines or systems. Essentially, 能 embodies potential and capability.
Beyond these core meanings, 能 also uniquely refers to "Noh" (能楽, のうがく), one of Japan's oldest and most revered classical theatrical arts. This dual nature—referring to both an abstract quality and a specific cultural performance—makes 能 an interesting kanji to study, linking modern concepts of aptitude with ancient cultural heritage.
Historically, the shape of 能 is believed to be a pictograph depicting a bear, specifically emphasizing its strong, capable paws. Ancient forms depict a creature with a head at the top and sturdy legs or paws below. Over time, this character for "bear" evolved to mean "ability" or "capability." This shift likely occurred because bears were seen as powerful and skilled animals, capable of feats beyond human strength. It's a fascinating leap from a concrete animal to an abstract concept of potential. So, when you see 能, you can imagine the inherent strength and capability implied by its ancient ursine origins. It consists of 10 strokes and is taught in Japanese elementary schools in the 5th grade.
Readings
To effectively use 能, understanding its readings is essential. Like many kanji, it has both Chinese-derived On'yomi and native Japanese Kun'yomi.
On'yomi (音読み) — Chinese-derived readings
The primary On'yomi for 能 is ノウ (NŌ). This reading is by far the most common and is used in almost all compounds related to the meanings of "ability," "function," "performance," and "capacity." When you encounter 能 as part of a multi-kanji word, it will almost certainly be read as ノウ.
能力 (nōryoku) — This compound refers to "ability" or "capacity," indicating the power to do something or the faculty to comprehend.
彼の能力は高いです。 (Kare no nōryoku wa takai desu.) — His ability is high.
機能 (kinō) — 機能 means "function" or "faculty." It's often used for the specific role or operation of a machine, system, or even a biological organ.
この携帯はたくさんの機能があります。 (Kono keitai wa takusan no kinō ga arimasu.) — This phone has many functions.
性能 (seinō) — 性能 refers to "performance" or "efficiency," typically describing the capabilities and quality of equipment, products, or even an individual's work output.
この車の性能はとてもいい。 (Kono kuruma no seinō wa totemo ii.) — This car's performance is very good.
Kun'yomi (訓読み) — Native Japanese readings
While 能 doesn't have a broad range of active Kun'yomi for verbs or adjectives, it does have one very significant native reading: のう (nō). This reading is exclusively used when referring to "Noh" (能), the traditional Japanese theatrical art form, where it directly names the performance itself.
能 (nō) — Specifically refers to Noh theater.
日本の伝統的な芸能である能は、独特な美学を持っています。 (Nihon no dentōteki na geinō de aru nō wa, dokutoku na bigaku wo motte imasu.) — Noh, a traditional Japanese performing art, has a unique aesthetic.
能楽 (nōgaku) — 能楽 specifically means "Noh play" or "Noh theater," encompassing its musical and dramatic aspects.
来週能楽を見に行きます。 (Raishū nōgaku wo mi ni ikimasu.) — I'm going to see a Noh play next week.
能面 (nōmen) — 能面 refers to a "Noh mask," an iconic and expressive element essential to Noh performances.
彼は古い能面を集めています。 (Kare wa furui nōmen wo atsumete imasu.) — He collects old Noh masks.
Common Words & Compounds
Here are some everyday words and compounds where 能 plays a key role, categorized by their nuanced meanings. You'll observe how "ability" and "capacity" are prominent concepts, expanding into various aspects of life and technology.
Words related to Human Abilities and Qualities
能力 (nōryoku) — ability, capacity, faculty. This is a fundamental compound, referring to the power to do something.
彼には高い言語能力がある。 (Kare ni wa takai gengo nōryoku ga aru.) — He has high language ability.
才能 (sainō) — talent, gift, aptitude. 才能 refers more to an innate skill, natural gift, or special aptitude.
彼女には音楽の才能がある。 (Kanojo ni wa ongaku no sainō ga aru.) — She has a talent for music.
有能 (yūnō) — capable, able, efficient. Often used to describe a competent, effective person with excellent skills in their field.
彼はとても有能な社長です。 (Kare wa totemo yūnō na shachō desu.) — He is a very capable president.
無能 (munō) — incompetent, useless, incapable. The direct opposite of 有能, implying a lack of ability or skill, or incompetence.
彼は自分を無能だと思っている。 (Kare wa jibun wo munō da to omotte iru.) — He thinks he is incompetent.
万能 (bannō) — almighty, omnipotent, versatile. 万能 means "all-purpose" or "capable of everything," often used for tools or versatile individuals.
この薬は万能ではありません。 (Kono kusuri wa bannō de wa arimasen.) — This medicine is not a cure-all.
Words related to Functions and Possibility
機能 (kinō) — function, faculty, feature. Describes what something does, its specific role or operation, or its features.
スマートフォンの新しい機能が追加されました。 (Sumātofon no atarashii kinō ga tsuika saremashita.) — New functions have been added to the smartphone.
性能 (seinō) — performance, efficiency, capability (of a machine). Refers to how well something operates or its overall quality.
新型エンジンの性能は驚異的だ。 (Shingata enjin no seinō wa kyōiteki da.) — The performance of the new engine is astonishing.
可能 (kanō) — possible, potential. This noun signifies feasibility or potential, often used to indicate what can or cannot be done.
それは不可能ではない、可能だ。 (Sore wa fukanō de wa nai, kanō da.) — That's not impossible, it's possible.
不能 (funō) — impossible, incapable, disability. The negation of 可能, describing something that cannot be done or a state of incapability.
彼は仕事を継続するのが不能だと判断された。 (Kare wa shigoto wo keizoku suru no ga funō da to handan sareta.) — He was judged incapable of continuing his work.
Words related to Noh Theater
能楽 (nōgaku) — Noh play, Noh theater. This is the broader term for the entire classical Japanese theatrical art form.
能楽は世界無形文化遺産です。 (Nōgaku wa sekai mukei bunka isan desu.) — Noh theater is a World Intangible Cultural Heritage.
芸能 (geinō) — performing arts, entertainment. 芸能 is a broader term encompassing various art forms, including Noh, singing, dancing, and acting.
彼女は芸能界で活躍している。 (Kanojo wa geinōkai de katsuyaku shite iru.) — She is active in the entertainment world.
Example Sentences
Here are some sentences showcasing 能 in action, ranging from simple to more complex scenarios, to help you understand its practical usage.
この機械の性能は非常に高いです。
Kono kikai no seinō wa hijō ni takai desu.
This machine's performance is extremely high.
彼は新しいコンピューターの機能を説明しました。
Kare wa atarashii konpyūtā no kinō wo setsumei shimashita.
He explained the new computer's functions.
人間の学習能力は無限大だと思います。
Ningen no gakushū nōryoku wa mugendai da to omoimasu.
I believe human learning ability is infinite.
彼女は並外れたバイオリンの才能を持っています。
Kanojo wa namihazureta baiorin no sainō wo motte imasu.
She possesses extraordinary violin talent.
このプロジェクトを成功させるには、有能なリーダーが必要です。
Kono purojekuto wo seikō saseru ni wa, yūnō na rīdā ga hitsuyō desu.
To succeed in this project, a capable leader is necessary.
私たちの会社は新しい業務システムへの移行が可能になりました。
Watashitachi no kaisha wa atarashii gyōmu shisutemu e no ikō ga kanō ni narimashita.
It became possible for our company to transition to a new business system.
日本の伝統芸能である能は、観客を魅了します。
Nihon no dentō geinō de aru nō wa, kankyaku wo miryō shimasu.
Noh, a traditional Japanese performing art, fascinates audiences.
彼は仕事に対するモチベーションが非常に高く、万能な人材です。
Kare wa shigoto ni taisuru mochibēshon ga hijō ni takaku, bannō na jinzai desu.
His motivation for work is very high, and he is an all-around capable person.
彼は責任感が強いのに、肝心な時に判断不能に陥ることがある。
Kare wa sekininkan ga tsuyoi noni, kanjin na toki ni handan funō ni ochīru koto ga aru.
Despite having a strong sense of responsibility, he sometimes becomes unable to make decisions at crucial moments.
Memory Tip
To remember 能, recall its original meaning of "bear" and the idea of "ability." Imagine a powerful bear standing tall, using its formidable strength and capable paws. The top part of the kanji, with elements resembling 匕 (a stylized spoon or dagger) on the left and 口 (mouth) on the right, could be seen as the bear's head and open mouth.
The middle part, ム (a variant of 'private' or 'self'), might suggest its strong, solid body. The bottom part, a stylized form of 肉 (meat/flesh) or 月 (moon/flesh radical), looks like two strong legs or paws, firmly planted and ready to act. So, visualize a strong bear showing off its "ability" with its powerful "paws." This connection from the strong animal to the concept of capability can help embed its meaning.