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On'yomi
クウ
KUU
Kun'yomi
そら・あ.く・あ.き・あ.ける・から・す.く・す.かす・むな.しい
sora / aku / aki / akeru / kara / suku / sukasu / munashii

empty · sky · void · vacant · vacuum

peacefulnaturemysterious

Details

Strokes8
Frequency#304
Radicalcave(5)

Description

Sky/Emptiness - vast openness, Zen concept of void, freedom.

Stroke Order

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Strokes8

Component Breakdown

=

Hole + work

Cultural Context

Etymology

Composed of '穴' (hole) and '工' (empty). Empty space like a hole.

Symbolism

Sky, void, Buddhist concept of 'emptiness'. Represents infinite possibility.

Spiritual Meaning

Represents Buddhist concept of form is emptiness - ultimate truth that all things lack inherent existence.

Seasonal

The sky changes expression with seasons. Autumn sky's high clear blue, rainy season sky's heaviness—the sky symbolizes seasons.

Anime & Manga

天空の城ラピュタ

てんくうのしろらぴゅた

Castle in the Sky(1986)

anime film

Adventure fantasy seeking a castle floating in the sky

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ノーゲーム・ノーライフ

のーげーむ・のーらいふ

No Game No Life(2014)

anime

Sibling protagonists 'Sora' and 'Shiro' dominate games

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ソードアート・オンライン

そーどあーと・おんらいん

Sword Art Online(2012)

manga/anime

Adventure in ALO world where you can fly in the sky

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Games

エースコンバット7

Ace Combat 7(2019)

PS4/Xbox/PC

Fighter jet action set in the sky

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ゼルダの伝説 スカイウォードソード

Zelda: Skyward Sword HD(2021)

Nintendo Switch

Adventure begins from Skyloft floating in the sky

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Words & Expressions

Four-Character Compounds

空前絶後

くうぜんぜつご

(so marvelous or horrible that it may be) the first and probably the last; (so marvelous or horrible that it may be) the first and probably the last

空中楼閣

くうちゅうろうかく

castle in the air; castle in the air

色即是空

しきそくぜくう

form is emptiness; matter is void; all is vanity; form is emptiness

天空海濶

てんくうかいかつ

the open sky and the serene sea; as open as the sky and serene as the sea; magnanimous; the open sky and the serene sea

徒手空拳

としゅくうけん

being empty-handed; being penniless; having no capital (for starting a business); being empty-handed

空即是色

くうそくぜしき

emptiness is form; illusion of the reality of matter; emptiness is form

空々漠々

くうくうばくばく

vast; boundless; wide and empty; vast

空理空論

くうりくうろん

impractical theory; academic discussion; doctrinairism; impractical theory

空々寂々

くうくうじゃくじゃく

deserted and lonesome; quiet and alone; innocent and nonattached; deserted and lonesome

史上空前

しじょうくうぜん

unprecedented in history; unheard-of; epoch-making; unprecedented in history

赤手空拳

せきしゅくうけん

barehanded; having no wealth or position to rely on (aside from one's own resourcefulness) (when embarking on something); barehanded

一切皆空

いっさいかいくう

matter is void; all is vanity; matter is void

天馬行空

てんばこうくう

unconstrained creativity; bold and imaginative; (like a) a heavenly steed soaring across the skies; unconstrained creativity

Proverbs & Idioms

空谷の跫音

くうこくのきょうおん

Footsteps in an empty valley

A rare and welcome visitor or event

Related Figures

空海

(くうかい)
Kukai774-835

Founder of Shingon Buddhism whose name contains 'sky'

Known as Kobo Daishi. Founded Koyasan, also renowned for calligraphy