広大 en 30 secondes
- Kōdai means vast, extensive, or immense.
- It's a na-adjective used for large natural areas, the universe, or abstract concepts.
- Remember to use 'na' before a noun: 広大な宇宙 (vast universe).
- It evokes a sense of awe at great scale and scope.
Understanding 広大 (Kōdai)
The Japanese word 広大 (こうだい - kōdai) is a na-adjective that describes something as being vast, extensive, or immense. It's used to convey a sense of great size, scope, or expanse, often in a way that evokes awe or a feeling of being overwhelmed by the sheer scale of something. Think of it as the Japanese equivalent of 'vast,' 'immense,' 'spacious,' 'boundless,' or 'extensive.'
- Usage Contexts
- When referring to geographical features like oceans, deserts, plains, or the sky, 広大 perfectly captures their immense scale. For example, the Pacific Ocean is 広大な (vast). Similarly, large natural landscapes or even man-made structures that stretch out over a significant area can be described as 広大な.
- Beyond physical spaces, 広大 can also describe abstract concepts like knowledge, experience, or potential. If someone has a vast amount of knowledge, you might say their understanding is 広大だ. This usage implies a depth and breadth that is extensive.
- The adjective often carries a sense of wonder or even a slight feeling of insignificance when contemplating the immensity it describes. It's a word that paints a picture of something grand and far-reaching, making it a powerful descriptive term.
The desert stretched out before us, a 広大な (vast) expanse of sand.
The universe is incredibly 広大だ (vast).
- Abstract Usage
- Imagine a scholar who has dedicated their life to studying a particular field. Their accumulated knowledge could be described as 広大な知識 (kōdai na chishiki - vast knowledge). This implies not just a large quantity but also a deep understanding across various sub-topics.
- Similarly, a person with extensive life experience might be said to have 広大な経験 (kōdai na keiken - extensive experience). This suggests they have encountered and learned from a wide array of situations.
Constructing Sentences with 広大
Using 広大 (こうだい - kōdai) effectively in Japanese sentences involves understanding its grammatical function as a na-adjective and its typical placement. As a na-adjective, it requires the particle な (na) when modifying a noun directly, and it can be used with だ (da) or です (desu) in predicate positions.
- Modifying Nouns
- The most common way to use 広大 is by placing it before a noun, preceded by な. This structure emphasizes the vastness of the noun that follows.
- Examples:
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広大な土地 (kōdai na tochi) - Vast land
- -
広大な宇宙 (kōdai na uchū) - Vast universe
- -
広大な知識 (kōdai na chishiki) - Vast knowledge
- As a Predicate
- When 広大 appears at the end of a sentence, it functions as the predicate. It can be followed by だ (da) in informal contexts or です (desu) in more formal situations.
- Examples:
- -
この砂漠は広大だ。(Kono sabaku wa kōdai da.) - This desert is vast.
- -
宇宙の広がりは広大です。(Uchū no hirogari wa kōdai desu.) - The expanse of the universe is vast.
- -
彼の知識は広大だ。(Kare no chishiki wa kōdai da.) - His knowledge is vast.
- Combining with Verbs
- You can also use 広大 to describe the scope of an action or a situation.
- Examples:
- -
我々は広大な海を航海している。(Wareware wa kōdai na umi o kōkai shite iru.) - We are sailing across a vast ocean.
- -
その問題は広大な影響を与える可能性がある。(Sono mondai wa kōdai na eikyō o ataeru kanōsei ga aru.) - That problem has the potential to have a vast impact.
Real-World Encounters with 広大
You're most likely to encounter 広大 (こうだい - kōdai) in contexts that emphasize grand scale, expansive environments, or profound concepts. It's a word that lends itself to descriptive language, often found in literature, documentaries, and discussions about nature, science, and philosophy.
- Nature and Geography
- Documentaries about the natural world frequently use 広大. You might hear it describing the 広大な太平洋 (kōdai na taiheiyō - vast Pacific Ocean), the 広大な砂漠 (kōdai na sabaku - vast desert), or the 広大な草原 (kōdai na sōgen - vast grassland). Travelogues and geographical texts also make liberal use of this term to paint a picture of immense landscapes.
- Think of nature photography captions or descriptions in travel brochures aiming to convey the sheer scale of a location. 広大 is the perfect word to evoke that feeling.
- Science and Astronomy
- Discussions about space and the universe are prime territory for 広大. When astronomers or science communicators talk about the 広大な宇宙 (kōdai na uchū - vast universe), they are emphasizing its immeasurable size and the countless celestial bodies within it.
- This word is also used when discussing the vastness of scientific knowledge or the immense scope of research projects. For instance, someone might mention the 広大なデータセット (kōdai na dēta setto - vast dataset) being analyzed.
- Literature and Philosophy
- In literature, 広大 can be used to describe settings that evoke a sense of awe, isolation, or endless possibility. A character might find themselves in a 広大な荒野 (kōdai na kōya - vast wilderness) or contemplate the 広大な人間の可能性 (kōdai na ningen no kanōsei - vast human potential).
- Philosophical discussions might touch upon the 広大な真理 (kōdai na shinri - vast truth) or the 広大な意識 (kōdai na ishiki - vast consciousness), using the word to signify something profound and immeasurable.
The author described the 広大な夜空 (vast night sky) filled with countless stars.
Avoiding Pitfalls with 広大
広大 (こうだい - kōdai) is a powerful adjective, but like any word, it can be misused. Understanding common mistakes will help you use it more accurately and naturally.
- Confusing with Similar Words
- A frequent error is confusing 広大 with words like 巨大 (kyodai - huge, gigantic) or 大きい (ōkii - big, large). While all relate to size, 広大 specifically emphasizes extent, expanse, or scope, rather than just sheer mass or volume.
- Incorrect:
その部屋は広大だ。(Sono heya wa kōdai da.) - That room is vast.
(Unless the room is exceptionally, unnaturally vast in its proportions, 'ōkii' or 'hiroi' (spacious) might be more appropriate.) - Correct:
その砂漠は広大だ。(Sono sabaku wa kōdai da.) - That desert is vast.
(Deserts are naturally vast.)
- Incorrect Grammatical Usage
- As a na-adjective, 広大 must be followed by な when directly modifying a noun. Forgetting this particle is a common grammatical oversight.
- Incorrect:
広大宇宙 (kōdai uchū) - Vast universe.
- Correct:
広大な宇宙 (kōdai na uchū) - Vast universe.
- Overuse or Misapplication
- While 広大 is descriptive, it's not always the most natural choice for every situation involving size. For everyday objects or smaller spaces, words like 大きい (ōkii) or 広い (hiroi - spacious) are more common and appropriate.
- Incorrect:
私の部屋は広大です。(Watashi no heya wa kōdai desu.) - My room is vast.
(Unless it's a mansion's ballroom, this sounds exaggerated.) - Correct:
私の部屋は広いです。(Watashi no heya wa hiroi desu.) - My room is spacious.
or私の部屋は大きいです。(Watashi no heya wa ōkii desu.) - My room is big.
Exploring Synonyms and Related Terms for Vastness
広大 (こうだい - kōdai) is a specific term for vastness, but Japanese offers several other words to describe size and scope, each with its own nuance. Understanding these alternatives will allow for more precise and varied expression.
- Direct Synonyms/Near Synonyms
- 広々 (hirobiro): This is an adverb or adjective describing spaciousness, often used for rooms, gardens, or open areas that feel airy and expansive. It has a more relaxed and comfortable feel than 広大.
- Example:
リビングは広々としている。(Ribingu wa hirobiro to shite iru.) - The living room is spacious.
- 広範 (kōhan): This adjective means 'wide-ranging' or 'extensive,' often used for scope, influence, or coverage. It's less about physical space and more about the breadth of an area of activity or knowledge.
- Example:
その研究は広範な分野に及ぶ。(Sono kenkyū wa kōhan na bun'ya ni oyobu.) - That research extends to a wide-ranging field.
- Words Focusing on Sheer Size
- 大きい (ōkii): The most general word for 'big' or 'large.' It lacks the specific nuance of 'expanse' that 広大 carries.
- Example:
これは大きい箱だ。(Kore wa ōkii hako da.) - This is a big box.
(Not necessarily vast.) - 巨大 (kyodai): Means 'huge,' 'gigantic,' or 'enormous.' It emphasizes sheer scale and size, often implying something monumental or colossal. It's closer to 広大 than 大きい but still focuses more on mass than expanse.
- Example:
その恐竜は巨大だった。(Sono kyōryū wa kyodai datta.) - That dinosaur was gigantic.
(Focus on its massive size.)
- Words for Openness/Spaciousness
- 広い (hiroi): Means 'wide' or 'spacious.' It's commonly used for physical spaces like rooms, roads, or fields that have ample space. It's less about overwhelming immensity and more about comfortable openness.
- Example:
この家は広いね。(Kono ie wa hiroi ne.) - This house is spacious, isn't it?
How Formal Is It?
Le savais-tu ?
The kanji 広 (hiroi) itself often evokes a sense of open space, while 大 (ōkii) simply denotes magnitude. Their combination in 広大 creates a powerful image of immense, far-reaching scale, often associated with awe-inspiring natural phenomena or the boundless universe.
Guide de prononciation
- Pronouncing 'kō' as a short 'ko' sound.
- Not lengthening the 'ō' sound.
- Mispronouncing the 'ai' diphthong in 'dai'.
Niveau de difficulté
Recognizable due to its common use in descriptive contexts, but requires understanding of its specific nuance of 'expanse' rather than just 'big'.
Requires careful application of 'na' before nouns and understanding when 'kōdai' is the most appropriate descriptor versus simpler alternatives.
Can be used in descriptive speech, but accuracy depends on nuanced understanding and appropriate context.
Easily recognizable in context, especially in documentaries or descriptive narratives.
Quoi apprendre ensuite
Prérequis
Apprends ensuite
Avancé
Grammaire à connaître
Na-adjectives require 'na' before a noun.
広大 + な + Noun (e.g., 広大な宇宙)
Na-adjectives can be followed by 'da' or 'desu' in predicate position.
宇宙は広大だ/です。 (Uchū wa kōdai da/desu.)
The noun-modifying form of an i-adjective does not use 'na'.
広い + Noun (e.g., 広い部屋 - spacious room)
Adverbs can modify adjectives or verbs.
広大に広がる (kōdai ni hirogaru) - To spread out vastly (less common, 'hirobiro' is more typical for adverbs).
Using the noun form of adjectives with 'sa'.
広大さ (kōdai sa) - Vastness
Exemples par niveau
空は広いです。
The sky is big.
This is a simpler way to express size, less specific than 'kōdai'.
海は大きいです。
The sea is big.
Basic adjective for size.
公園は広いです。
The park is spacious.
'Hiroi' is common for spaciousness.
部屋は広いです。
The room is spacious.
Used for indoor spaces.
道は長いです。
The road is long.
Describes length, not expanse.
山は高いです。
The mountain is tall.
Describes height.
建物は大きいです。
The building is big.
General term for size.
庭は広いです。
The garden is spacious.
Focuses on the area.
その砂漠はとても広いです。
That desert is very vast/spacious.
'Hiroi' can sometimes imply vastness for natural landscapes.
宇宙はとても大きいです。
The universe is very big.
Basic descriptor for the universe.
この土地は広々としている。
This land is spacious.
'Hirobiro' suggests a comfortable, open space.
彼の知識は広い。
His knowledge is wide.
'Hiroi' can be used metaphorically for knowledge.
この公園はとても広いです。
This park is very spacious.
Emphasizes the size of the park.
海は広くて青い。
The sea is vast and blue.
Combining descriptors for the sea.
彼らの影響力は大きい。
Their influence is great.
'Ōkii' for influence.
plains are very wide.
The plains are very wide.
'Hiroi' can describe plains.
その広大な砂漠には、わずかなオアシスしかありませんでした。
In that vast desert, there were only a few oases.
Introduces 'kōdai' for a natural landscape.
宇宙の広大さを考えると、人間の存在はとても小さい。
Considering the vastness of the universe, human existence is very small.
Abstract concept of vastness.
この図書館には広大な蔵書がある。
This library has an extensive collection of books.
'Kōdai na' modifying 'zōsho' (collection).
広大な土地が開発のために売却された。
Vast tracts of land were sold for development.
'Kōdai na' describing 'tochi' (land).
彼の経験は広大で、多くのことを学んだ。
His experience is extensive, and he learned many things.
'Kōdai na' for abstract concept 'keiken' (experience).
広大な海を一人で航海するのは大変だ。
It's difficult to navigate the vast ocean alone.
'Kōdai na' describing 'umi' (ocean).
その会社は広範な事業を展開している。
That company is developing a wide-ranging business.
'Kōhan na' for business scope.
広大な空に、一筋の飛行機雲が見えた。
A single contrail was visible in the vast sky.
'Kōdai na' for 'sora' (sky).
広大な宇宙空間における生命の存在は、未だ解明されていない謎である。
The existence of life in the vast expanse of outer space is a mystery yet to be solved.
Formal and descriptive use of 'kōdai na uchū kūkan'.
その科学者は、広大なデータセットから新たな法則を発見した。
The scientist discovered a new law from the vast dataset.
'Kōdai na dēta setto' for a large amount of data.
広大な平原が地平線まで続いていた。
Vast plains continued to the horizon.
Describing a geographical feature with 'kōdai na heigen'.
この文学作品は、人間の心理の広大さを探求している。
This literary work explores the vastness of the human psyche.
'Kōdai sa' (vastness) as a noun, referring to abstract concepts.
広大な知識を持つ彼女は、どんな質問にも的確に答えることができた。
With her vast knowledge, she could answer any question accurately.
'Kōdai na chishiki' for extensive knowledge.
広大な自然の中で、彼は自分自身の小ささを感じた。
In the vast nature, he felt his own smallness.
'Kōdai na shizen' to emphasize the scale of nature.
このプロジェクトは広範な地域に影響を与えるだろう。
This project will likely affect a wide-ranging area.
'Kōhan na chiiki' for broad impact.
広大な海原を前に、彼は決意を新たにした。
Facing the vast ocean expanse, he renewed his determination.
'Kōdai na unabara' for a grand ocean view.
銀河系の広大さの中では、我々の太陽系は取るに足らない点に過ぎない。
Within the vastness of the Milky Way galaxy, our solar system is merely an insignificant point.
Sophisticated use of 'kōdai sa' and astronomical context.
彼の思想は、当時の常識を遥かに超えた広大さを持っていた。
His ideas possessed a vastness that far surpassed the common sense of the time.
Metaphorical use of 'kōdai sa' for intellectual scope.
広大な歴史の流れの中で、個人の人生は一瞬の輝きに過ぎない。
In the vast flow of history, individual lives are but a fleeting sparkle.
Philosophical reflection on history's scale.
その芸術家の作品は、人間の感情の広大さと複雑さを描き出している。
The artist's works depict the vastness and complexity of human emotions.
'Kōdai sa' referring to the depth and breadth of emotions.
広大な領土を統治するには、卓越した指導力と広範な知識が不可欠である。
To govern a vast territory, exceptional leadership and extensive knowledge are indispensable.
Combining 'kōdai na ryōdo' and 'kōhan na chishiki'.
広大な大陸を横断する旅は、多くの困難と発見に満ちていた。
The journey across the vast continent was filled with many hardships and discoveries.
'Kōdai na tairiku' for geographical scale.
広範な社会変革は、しばしば長期間にわたる広大な努力を必要とする。
Extensive social change often requires vast efforts over a long period.
'Kōhan na shakai henkaku' and 'kōdai na doryoku'.
広大な森の奥深くで、彼は静寂と孤独に包まれた。
Deep within the vast forest, he was enveloped by silence and solitude.
'Kōdai na mori' to convey the immensity of a forest.
宇宙の広大さゆえに、我々は孤独である可能性も、あるいは至る所に生命が存在する可能性も否定できない。
Due to the vastness of the universe, we can neither deny the possibility of our solitude nor the possibility of life existing everywhere.
Complex sentence structure and philosophical implication of 'kōdai sa'.
その哲学者は、人間の意識の広大さの中に、宇宙の真理の断片を見出した。
The philosopher found fragments of universal truth within the vastness of human consciousness.
Profound and abstract use of 'kōdai sa' in a philosophical context.
広大な歴史的文脈において、個人の行動はしばしばより大きな力学に翻弄される。
In the vast historical context, individual actions are often at the mercy of larger dynamics.
'Kōdai na rekishiteki bunmyaku' for a grand historical perspective.
広大な自然の摂理は、人間の理性では到底理解しきれない深遠さを持っている。
The principles of vast nature possess a profundity that human reason can hardly comprehend.
'Kōdai na shizen no setsuri' and 'shinen sa' (profundity).
広範な知識と共感力をもって、彼は人々の心の広大さをも理解しようとした。
With extensive knowledge and empathy, he attempted to understand the vastness of people's hearts.
Combining 'kōhan na chishiki' with 'kokoro no kōdai sa'.
広大な荒野に一人佇み、彼は自己の存在の矮小さと宇宙の無限性を同時に感じ取った。
Standing alone in the vast wilderness, he simultaneously felt the insignificance of his own existence and the infinity of the universe.
Evocative imagery and contrasting feelings of 'kōdai na kōya'.
広範な社会運動は、しばしば既存の秩序に対する広大な異議申し立ての集約である。
Extensive social movements are often an aggregation of vast objections to the existing order.
'Kōhan na shakai undō' and 'kōdai na igi mōshitate'.
広大な知識の海を泳ぎ続けるには、絶え間ない探求心と謙虚さが必要とされる。
To continue swimming in the vast sea of knowledge, constant curiosity and humility are required.
Metaphorical and profound use of 'kōdai na chishiki no umi'.
Collocations courantes
Phrases Courantes
— It is vast/extensive/immense.
この宇宙は本当に広大だ。 (Kono uchū wa hontō ni kōdai da.) This universe is truly vast.
— Vast/extensive/immense ~ (used before a noun).
広大な草原が目の前に広がっていた。 (Kōdai na sōgen ga me no mae ni hirogatte ita.) A vast grassland spread out before my eyes.
— Vastness, extensiveness, immensity (noun form).
宇宙の広大さを考えると、畏敬の念を抱く。 (Uchū no kōdai sa o kangaeru to, ikei no nen o idaku.) Considering the vastness of the universe, one feels awe.
— Vast and boundless; immeasurable.
広大無辺な海を旅する。 (Kōdai muhen na umi o tabi suru.) To travel the vast and boundless sea.
— Vast/extensive/immense ~ (used before a noun).
広大な知識を持つ学者。 (Kōdai na chishiki o motsu gakusha.) A scholar with vast knowledge.
— It is vast/extensive/immense.
この土地は広大だ。 (Kono tochi wa kōdai da.) This land is vast.
— Vast/extensive/immense ~ (used before a noun).
広大な影響力を持つ人物。 (Kōdai na eikyōryoku o motsu jinbutsu.) A person with vast influence.
— Vastness, extensiveness, immensity (noun form).
その地域の広大さは驚くべきだ。 (Sono chiiki no kōdai sa wa odorokubeki da.) The vastness of that region is astonishing.
— It is vast/extensive/immense.
彼の才能は広大だ。 (Kare no sainō wa kōdai da.) His talent is vast.
— Vast/extensive/immense ~ (used before a noun).
広大な夢を追いかける。 (Kōdai na yume o oikakeru.) To chase a grand dream.
Souvent confondu avec
Both mean large, but 巨大 emphasizes sheer size and mass (gigantic, colossal), while 広大 emphasizes expanse and scope (vast, extensive).
広い means 'wide' or 'spacious' and is more commonly used for rooms, roads, or comfortable open areas. 広大 implies a much grander, often awe-inspiring, scale.
大きい is the general word for 'big' or 'large'. It lacks the specific nuance of expanse that 広大 carries.
Expressions idiomatiques
— Vast and boundless; immeasurable. This idiom emphasizes the limitless extent of something, often used for the universe or abstract concepts.
広大無辺な宇宙の片隅で、私たちは小さな星に住んでいる。 (Kōdai muhen na uchū no katasumi de, watashitachi wa chiisana hoshi ni sunde iru.) In a corner of the vast and boundless universe, we live on a small planet.
Formal/Literary— A drop in the ocean. This idiom highlights the insignificance of something in comparison to a vast whole, emphasizing the contrast in scale.
私の貢献など、このプロジェクトの広大さから見れば大海の一滴に過ぎない。 (Watashi no kōken nado, kono purojekuto no kōdai sa kara mireba taikai no itteki ni suginai.) My contribution is merely a drop in the ocean compared to the vastness of this project.
Neutral— To swear by heaven and earth and the gods; to swear solemnly. While not directly using 'kōdai', it evokes the immense power and scope of the universe and deities as witnesses.
広大な天地神明に誓って、私はこの約束を守ります。 (Kōdai na tenchi shinmei ni chikatte, watashi wa kono yakusoku o mamorimasu.) I swear by heaven and earth and the gods that I will keep this promise.
Formal— To soak into one's very being; to deeply affect one's entire body and soul. This idiom, while not using 'kōdai', describes a profound and pervasive experience, akin to being enveloped by something vast.
広大な自然の美しさが、五臓六腑に染み渡った。 (Kōdai na shizen no utsukushisa ga, gozō roppu ni shimiwatatta.) The beauty of the vast nature soaked into my very being.
Neutral— To have a broad perspective; to think on a large scale.
広大な視野を持つリーダーは、短期的な問題にとらわれず、長期的な目標を見据える。 (Kōdai na shiya o motsu rīdā wa, tanki-teki na mondai ni torawarezu, chōki-teki na mokuhyō o misueru.) A leader with a broad perspective looks towards long-term goals without being caught up in short-term issues.
Neutral— A magnanimous heart; a forgiving and understanding nature.
彼は広大な心で、過ちを犯した部下を許した。 (Kare wa kōdai na kokoro de, ayamachi o okashita buka o yurushita.) With a magnanimous heart, he forgave the subordinate who made a mistake.
Neutral— Vast/extensive/immense ~.
広大な領土を支配する。 (Kōdai na ryōdo o shihai suru.) To rule over a vast territory.
Neutral— Vast and boundless; immeasurable.
広大無辺な知識の海を旅する。 (Kōdai muhen na chishiki no umi o tabi suru.) To journey through the vast and boundless sea of knowledge.
Formal/Literary— A drop in the ocean.
彼の研究成果は、広大な科学の世界では大海の一滴に過ぎない。 (Kare no kenkyū seika wa, kōdai na kagaku no sekai de wa taikai no itteki ni suginai.) His research results are merely a drop in the ocean in the vast world of science.
Neutral— Vast/extensive/immense ~.
広大な夢を抱く。 (Kōdai na yume o idaku.) To harbor grand dreams.
NeutralFacile à confondre
Both describe something large.
巨大 focuses on sheer size and mass (gigantic, colossal), often implying something monumental. 広大 emphasizes expanse and scope (vast, extensive), often evoking awe for natural or abstract immensity.
巨大な山 (kyodai na yama - a gigantic mountain) vs. 広大な砂漠 (kōdai na sabaku - a vast desert).
Both relate to space and size.
広い means 'wide' or 'spacious', typically used for rooms, gardens, or comfortable open areas. 広大 implies a much grander, often overwhelming, scale, like the universe or a continent.
広い部屋 (hiroi heya - a spacious room) vs. 広大な宇宙 (kōdai na uchū - a vast universe).
It's the most basic word for 'big'.
大きい is a general term for 'big' or 'large'. It doesn't carry the specific meaning of 'expanse' or 'immensity' that 広大 does. 広大 is a more descriptive and formal term for vastness.
大きい犬 (ōkii inu - a big dog) vs. 広大な平原 (kōdai na heigen - vast plains).
Both suggest grandeur.
雄大 emphasizes majesty, magnificence, and impressiveness, often associated with natural beauty or grand scenes. 広大 focuses purely on the immense scale and expanse.
雄大な景色 (yūdai na keshiki - majestic scenery) vs. 広大な大地 (kōdai na daichi - vast land).
Both relate to 'wide' or 'extensive'.
広範 means 'wide-ranging' or 'extensive' in scope, coverage, or influence, rather than physical size or expanse. It's often used for abstract concepts like knowledge or business operations.
広範な知識 (kōhan na chishiki - extensive knowledge) vs. 広大な知識 (kōdai na chishiki - vast knowledge, emphasizing depth and breadth).
Structures de phrases
Noun + は + 広大だ/です。
空は広大だ。 (Sora wa kōdai da.) The sky is vast.
広大 + な + Noun
広大な庭。 (Kōdai na niwa.) A vast garden.
Noun + は + 広大 + な + Noun + です。
この砂漠は広大な土地です。 (Kono sabaku wa kōdai na tochi desu.) This desert is vast land.
〜の広大さ + を感じる/知る。
宇宙の広大さを感じた。 (Uchū no kōdai sa o kanjita.) I felt the vastness of the universe.
広大な + Noun + が + Verb.
広大な海を航海する。 (Kōdai na umi o kōkai suru.) To sail the vast ocean.
Noun + は + 広大 + な + 影響 + を与える。
その発見は広大な影響を与えた。 (Sono hakken wa kōdai na eikyō o ataeta.) That discovery had a vast impact.
広大無辺 + な + Noun
広大無辺な宇宙。 (Kōdai muhen na uchū.) A vast and boundless universe.
〜という + 広大さ + は、〜。
人間が持つという広大さは、驚くべきものだ。 (Ningen ga motsu to iu kōdai sa wa, odorokubeki mono da.) The vastness that humans possess is astonishing.
Famille de mots
Noms
Adjectifs
Apparenté
Comment l'utiliser
Common, especially in descriptive contexts.
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Forgetting 'na' after 広大 when modifying a noun.
→
広大な宇宙 (kōdai na uchū)
As a na-adjective, 広大 requires 'na' before a noun. Omitting it is a grammatical error.
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Using 広大 for small or everyday spaces.
→
この部屋は広い (hiroi) です。
広大 implies immense scale. For a normal-sized room, 'hiroi' (spacious) or 'ōkii' (big) is more appropriate. Using 広大 would sound exaggerated.
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Confusing 広大 (vastness) with 巨大 (gigantic size).
→
巨大な建物 (kyodai na tatemono - a gigantic building)
巨大 emphasizes sheer mass and size, while 広大 emphasizes expanse and scope. A building is typically 巨大, while a desert is 広大.
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Pronouncing 'kō' as a short 'ko'.
→
kō-dai (long 'ō' sound)
The 'ō' in 'kō' is a long vowel sound, similar to the 'o' in 'go' (US) or 'door' (UK). A short 'ko' sound changes the pronunciation significantly.
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Using 広大 for abstract concepts where 'wide-ranging' is more fitting.
→
広範な知識 (kōhan na chishiki - extensive knowledge)
While 広大 can be used for abstract concepts, 広範 often fits better when referring to the breadth of scope or coverage in areas like knowledge or influence. It's about range rather than sheer immensity.
Astuces
Remember 'Na'
As a na-adjective, 広大 requires the particle 'na' when it directly precedes a noun (e.g., 広大な宇宙 - vast universe). Forgetting this is a common mistake.
Distinguish from 'Hiroi'
Don't confuse 広大 (kōdai) with 広い (hiroi). 広い means 'spacious' or 'wide' and is used for things like rooms or gardens. 広大 implies a much grander, often awe-inspiring, scale.
Long Vowels
Pay attention to the long 'ō' in 'kō' (こう). It's a sustained sound, like the 'o' in 'go' (US) or 'door' (UK), not a short 'ko'.
Visual Association
Imagine a vast, unending desert under an immense sky. The sheer scale of this image is what 広大 conveys. Associate the word with such powerful visual imagery.
Vast vs. Huge
Remember that 広大 (kōdai) is about expanse and scope, while 巨大 (kyodai) is about sheer size and mass. A vast desert is 広大, while a gigantic statue is 巨大.
Beyond Physical Space
広大 can describe abstract things like knowledge, influence, or potential. Think of it as 'extensive' or 'far-reaching' in these contexts.
Evoking Awe
Using 広大 often carries a sense of awe, wonder, or even a feeling of human smallness in the face of something so immense. It's a word that paints a grand picture.
Sentence Building
Try creating your own sentences using 広大. Describe the sky, the ocean, or even the amount of information available online. This active practice solidifies understanding.
Appreciation for Nature
Japanese culture often expresses deep appreciation for the grandeur of nature. 広大 fits perfectly into this context, reflecting respect for the immense forces and scales found in the natural world.
Mémorise-le
Moyen mnémotechnique
Imagine a giant Kōala bear (Kō-) sitting on a huge DAIS (-dai) in the middle of an enormous, vast field. The Kōala is so big that its presence makes the field seem even more vast. Kōala-DAIS = 広大.
Association visuelle
Picture a vast, empty desert stretching to the horizon under a massive, endless sky. The sheer scale of this image embodies 'kōdai'.
Word Web
Défi
Try to describe five things you see around you using 'kōdai' if they truly fit the description of vastness. If not, try to explain why they don't and what word would be more appropriate.
Origine du mot
The word 広大 (kōdai) is a compound word formed from two kanji: 広 (kō, hiroi) meaning 'wide' or 'broad,' and 大 (dai, ōkii) meaning 'big' or 'large.' Together, they convey the meaning of something being both wide and large, hence vast or immense.
Sens originel : Literally 'wide big', signifying something of great expanse and size.
Sino-Japanese (derived from Chinese)Contexte culturel
When using 広大, be mindful of the context. While it's generally a positive or neutral descriptor for immense scale, overuse or misapplication to smaller, everyday objects can sound exaggerated or even humorous.
In English, words like 'vast,' 'immense,' 'extensive,' 'boundless,' and 'spacious' are good equivalents. The nuance often lies in whether you're describing physical space, abstract concepts, or a general sense of great size.
Pratique dans la vie réelle
Contextes réels
Describing natural landscapes.
- 広大な砂漠
- 広大な海
- 広大な森
- 広大な草原
Discussing space and the universe.
- 広大な宇宙
- 広大な銀河
- 広大な空間
Referring to abstract concepts.
- 広大な知識
- 広大な可能性
- 広大な影響
Describing large geographical areas.
- 広大な土地
- 広大な領土
- 広大な大陸
Expressing awe or wonder.
- 広大さを感じる
- 広大さに驚く
- 広大無辺
Amorces de conversation
"What's the most vast or immense place you've ever seen or imagined?"
"If you could explore any vast, unexplored region, where would you go and why?"
"How does the vastness of the universe make you feel?"
"Can you think of a time when you felt overwhelmed by the sheer scale of something?"
"What are some abstract concepts that feel 'vast' to you?"
Sujets d'écriture
Describe a natural landscape that felt truly vast to you. Use the word 広大 in your description.
Reflect on a time you encountered something immense, whether it was a physical place, a concept, or a body of knowledge. How did it impact you?
Imagine you are an astronaut looking back at Earth from space. Describe what you see, focusing on the scale and vastness.
Consider the vastness of human knowledge. What is one area you wish you knew more about, and why?
Write a short story about a character who gets lost in a vast, unfamiliar place. How do they cope with the immensity?
Questions fréquentes
10 questionsWhile both words mean 'large,' 巨大 (kyodai) emphasizes sheer size and mass, like 'gigantic' or 'colossal.' 広大 (kōdai), on the other hand, focuses on expanse and scope, meaning 'vast' or 'extensive.' For example, a mountain might be 巨大 (kyodai) due to its bulk, while a desert is 広大 (kōdai) due to its endless stretch. You might describe a huge building as 巨大, but the universe is 広大.
広い (hiroi) means 'wide' or 'spacious' and is commonly used for everyday spaces like rooms, gardens, or roads that offer comfortable openness. 広大 (kōdai) implies a much grander, often awe-inspiring, scale. Use 広大 for things like the universe, vast oceans, immense deserts, or extensive knowledge, where the sheer immensity is the key characteristic.
No, 広大 (kōdai) can also be used for abstract concepts. For instance, you can talk about 広大な知識 (kōdai na chishiki - vast knowledge), 広大な可能性 (kōdai na kanōsei - vast potential), or 広大な影響 (kōdai na eikyō - vast influence). In these cases, it signifies a great breadth, depth, or scope.
広大 (kōdai) is a na-adjective. When it directly modifies a noun, you must use the particle 'na' between 広大 and the noun, like 広大な宇宙 (kōdai na uchū - vast universe). When it acts as a predicate at the end of a sentence, you can use 'だ' (da) in informal speech or 'です' (desu) in formal speech, like 宇宙は広大だ (Uchū wa kōdai da - The universe is vast).
Yes, a common one is 広大無辺 (kōdai muhen), meaning 'vast and boundless' or 'immeasurable.' It's often used to describe the universe or other things of infinite extent. Another related concept is 大海の一滴 (taikai no itteki - a drop in the ocean), which highlights insignificance in the face of vastness.
広大さ (kōdai sa) is the noun form of 広大 (kōdai) and means 'vastness,' 'extensiveness,' or 'immensity.' It's used to talk about the quality or state of being vast. For example, you might say 宇宙の広大さを感じる (Uchū no kōdai sa o kanjiru - to feel the vastness of the universe).
Yes, it can be used metaphorically to describe a person's character, often implying a magnanimous nature, like 広大な心 (kōdai na kokoro - a magnanimous heart/mind). It suggests a broad and understanding disposition, capable of encompassing many things without being narrow-minded.
大きい (ōkii) is much more frequent as it's a general term for 'big.' 広大 (kōdai) is less frequent but is used specifically when the emphasis is on vastness, expanse, or immensity, often in more descriptive or formal contexts.
Similar words include 広範 (kōhan - wide-ranging, extensive scope), 雄大 (yūdai - majestic, grand), and 広漠 (kōbaku - vast and desolate). Each has a slightly different nuance, with 広大 specifically highlighting immense scale and expanse.
Yes, 広大無辺 (kōdai muhen) is a more literary and emphatic expression for 'vast and boundless.' Also, the classical Japanese adjective 広し (hiroshi), which is the root of 広い (hiroi), could be used in older texts to convey a similar sense of breadth, though 広大 is the standard modern term for immense scale.
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Summary
広大 (kōdai) is a descriptive na-adjective signifying vastness, immensity, or extensive scope, primarily used for grand natural phenomena, the universe, or abstract concepts like knowledge and influence. Its usage requires careful attention to context to distinguish it from simpler words for 'big' or 'spacious'.
- Kōdai means vast, extensive, or immense.
- It's a na-adjective used for large natural areas, the universe, or abstract concepts.
- Remember to use 'na' before a noun: 広大な宇宙 (vast universe).
- It evokes a sense of awe at great scale and scope.
Context is Key
Always consider the context. While 広大 means vast, using it for a small room would be incorrect. It's best reserved for things like landscapes, the universe, abstract concepts, or when you want to emphasize a truly immense scale.
Remember 'Na'
As a na-adjective, 広大 requires the particle 'na' when it directly precedes a noun (e.g., 広大な宇宙 - vast universe). Forgetting this is a common mistake.
Distinguish from 'Hiroi'
Don't confuse 広大 (kōdai) with 広い (hiroi). 広い means 'spacious' or 'wide' and is used for things like rooms or gardens. 広大 implies a much grander, often awe-inspiring, scale.
Long Vowels
Pay attention to the long 'ō' in 'kō' (こう). It's a sustained sound, like the 'o' in 'go' (US) or 'door' (UK), not a short 'ko'.
Exemple
その平野は広大な土地が広がっていた。
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