欠乏 en 30 segundos
- A formal term for a severe, critical lack of essential resources or nutrients.
- Commonly used in medical (deficiency), economic (scarcity), and news contexts.
- More serious and formal than '不足' (busoku); implies a dire or pathological state.
- Often functions as a noun (〜の欠乏) or an intransitive verb (〜が欠乏する).
The Japanese word 欠乏 (けつぼう - ketsubou) is a sophisticated and formal noun that describes a state of extreme scarcity, insufficiency, or a complete lack of something that is fundamentally necessary for survival, health, or proper functioning. While the English word 'shortage' or 'lack' might suffice in casual conversation, 欠乏 carries a weightier, often clinical or socioeconomic gravity. It is the linguistic tool of choice when discussing life-threatening situations like famines, medical crises involving nutrient deficiencies, or critical industrial shortages that could halt an entire nation's production.
- Biological and Medical Scarcity
- This is perhaps the most common domain for the word. When the human body lacks essential elements like Vitamin C, iron, or sleep, doctors use '欠乏' to describe the deficiency. For instance, 'ビタミン欠乏症' (vitamin deficiency disease) is a standard medical term. It implies that the absence is so significant that it has triggered a pathological state.
- Resource and Economic Depletion
- In macroeconomics or environmental science, 欠乏 refers to the exhaustion of natural resources or essential commodities. When a country faces a 'fuel shortage' (燃料の欠乏) or 'water scarcity' (水の欠乏), it suggests a dire situation where the infrastructure is failing or the environment can no longer provide for the population.
- Abstract and Emotional Absence
- While primarily physical, the word can be applied metaphorically to abstract concepts like 'love' (愛情の欠乏) or 'common sense' (良識の欠乏). In these cases, it suggests a profound, systemic void that affects a person's character or a society's health, rather than just a temporary 'missing piece.'
長期にわたる食糧の欠乏は、国民の健康に深刻な影響を及ぼした。
砂漠地帯では、水の欠乏が死活問題となる。
The kanji themselves tell a story: 欠 (ketsu) means a gap, a break, or a yawning hole, while 乏 (bou) means scarce or meager. Together, they depict a scene where the 'gap' is so wide that it becomes 'scarce'—a void that needs filling. Historically, this word appears frequently in literature regarding the post-war periods in Japan, where the lack of materials (資材の欠乏) was a daily reality. Understanding 欠乏 requires recognizing that it isn't just about 'not having enough'; it is about the 'anguish of the absence' of something vital.
愛情の欠乏が、少年の非行の原因の一つだったと言われている。
- Scientific Contexts
- In chemistry or physics, if an environment is 'oxygen-deficient,' it is called 酸素欠乏 (sanso-ketsubou). This is a technical term used in safety manuals and industrial regulations.
資源の欠乏により、工場は稼働を停止せざるを得なかった。
Grammatically, 欠乏 functions primarily as a noun, but it is frequently paired with the verb する to act as an intransitive verb meaning 'to be deficient' or 'to run short of.' Because it is a formal word (kango), it often appears in the pattern '[Noun] + の + 欠乏' or '[Noun] + が + 欠乏する'. Understanding the surrounding grammar is key to sounding natural.
- The 'No' Particle Connection
- When using 欠乏 as a noun to describe a condition, use 'の'. For example: 'ビタミンの欠乏' (The lack of vitamins). This is the most common way to use it as a subject or object in a sentence. It focuses on the state of lack itself as a thing.
- The 'Ga Ketsubou Suru' Pattern
- When you want to describe the process of something becoming scarce or the ongoing state of scarcity, use 'が欠乏する'. Example: 'この地域では水が欠乏している' (Water is scarce in this region). The use of 'ている' implies a continuing state of deficiency.
現代社会において、多くの人々が睡眠の欠乏に悩まされている。
One must be careful with the level of formality. You wouldn't say '醤油が欠乏している' (shoyu ga ketsubou shiteiru) when you run out of soy sauce at home; that sounds like a national soy sauce crisis. Instead, use '足りない' (tarinai) or 'ない' (nai). 欠乏 is for things that are vital, like oxygen, blood, funds, or nutrients. It is often found in academic writing, news reports, and medical journals.
- Compound Nouns (熟語)
- 欠乏 is often the base for larger compounds. '酸素欠乏症' (Anoxia/Oxygen deficiency), '鉄欠乏性貧血' (Iron-deficiency anemia), and '資金欠乏' (Capital shortage). These compounds are treated as single technical terms.
その計画は、資金の欠乏により中断を余儀なくされた。
When describing people, 欠乏 can take on a psychological nuance. '道徳心の欠乏' (lack of moral sense) or '想像力の欠乏' (lack of imagination). In these contexts, it implies a fundamental flaw in the person's character or ability. It is a harsh criticism, suggesting that the quality isn't just low, but virtually non-existent or critically missing.
彼は、他者への共感能力が著しく欠乏している。
If you are walking down the street in Tokyo or chatting with friends at a cafe, you probably won't hear 欠乏. It is a 'written-style' or 'formal-speech' word. However, in specific professional and media environments, it is ubiquitous. Knowing where to expect it will help you tune your ears to the right frequency.
- NHK News and Documentaries
- When Japanese news programs report on global issues like the climate crisis or international conflicts, they use 欠乏 to describe the resulting hardships. '食糧欠乏に喘ぐ人々' (People struggling with food shortages) is a common phrase in reports about developing nations or war zones. The word adds a layer of objective, serious reporting.
- Medical Consultations and Health Reports
- If you receive blood test results in Japan, you might see 欠乏. A doctor might say, '鉄分が欠乏していますね' (You are deficient in iron). In this context, it isn't just a casual observation; it is a clinical diagnosis. Health magazines often run articles titled '現代人に足りない栄養素：亜鉛欠乏の恐怖' (Nutrients modern people lack: The fear of zinc deficiency).
「この地域では、数ヶ月にわたって真水が欠乏しています」とリポーターは伝えた。
Another common place to encounter 欠乏 is in history textbooks and museums. Japan's history, particularly during and immediately after World War II, is often described through the lens of '物資の欠乏' (lack of materials). This phrase evokes the collective memory of a time when everything from rice to metal was scarce. In this sense, the word carries a historical resonance of endurance and hardship.
戦後の混乱期、日本は深刻な物資の欠乏に直面した。
In the business world, particularly in manufacturing or logistics, 欠乏 is used during supply chain disruptions. If a semiconductor factory burns down, the resulting 'semiconductor shortage' (半導体欠乏) becomes a major headline in the Nikkei Shimbun (Japan's equivalent of the Wall Street Journal). Here, it signifies a lack that has a measurable impact on the economy.
「酸素欠乏の危険があるため、この部屋への立ち入りを禁止します」
Lastly, in academic or philosophical debates, you might hear it used to describe a lack of theoretical foundation or a lack of evidence. A professor might critique a student's thesis by saying it has a 'logic deficiency' (論理の欠乏). This is a very high-level usage that marks the speaker as highly educated.
Because Japanese has many words for 'lack' or 'shortage,' students often struggle with choosing the right one. Using 欠乏 in the wrong context can make you sound overly dramatic or like a textbook that hasn't quite mastered natural speech.
- Confusing 欠乏 with 不足 (Busoku)
- This is the most frequent error. '不足' is the general-purpose word for 'not enough.' If you don't have enough money for a movie ticket, it's '資金不足' (shikin busoku). If you use '欠乏' here, it sounds like you are in a state of absolute destitution. Rule of thumb: Use 不足 for daily inconveniences and 欠乏 for critical or medical crises.
- Misusing the Particle 'Wo'
- As mentioned in the grammar section, many learners try to say 'ビタミンを欠乏する' (to lack vitamins). In Japanese, 欠乏 is an intransitive state. The correct form is 'ビタミンが欠乏する' (vitamins are lacking). This is a subtle but important distinction that separates intermediate learners from advanced speakers.
× 醤油を欠乏しています。
○ 醤油が足りません。
Another mistake is confusing 欠乏 with 欠如 (ketsujo). While they are similar, 欠如 is used almost exclusively for abstract qualities like 'responsibility,' 'common sense,' or 'motivation.' You would say '責任感の欠如' (lack of sense of responsibility), but you would say 'ビタミンの欠乏' (lack of vitamins). Using 欠如 for physical substances sounds very strange.
「経験の欠乏」と言っても通じますが、一般的には「経験不足」と言います。
Finally, avoid using 欠乏 for people being 'missing' or 'absent.' For a person who is absent from a meeting, use '欠席' (kesseki). For a person who is missing in action or lost, use '行方不明' (yukue-fumei). 欠乏 is strictly for substances, resources, or abstract qualities that should be present within a system or person.
To truly master 欠乏, you must understand its neighbors in the Japanese lexicon. Each word for 'lack' has a specific 'flavor' and domain.
- 不足 (Busoku) vs. 欠乏 (Ketsubou)
- 不足: Everyday lack. 'Not enough.' Can be minor (lack of salt) or major (lack of sleep).
欠乏: Dire scarcity. 'Deficiency.' Implies a critical level that causes problems (vitamin deficiency, water scarcity). - 欠如 (Ketsujo) vs. 欠乏 (Ketsubou)
- 欠如: Lack of abstract qualities. Used for character traits like 'moral sense,' 'patience,' or 'planning.'
欠乏: Usually for physical substances (water, food, vitamins). Can be abstract (love), but 欠如 is more common for personality flaws. - 枯渇 (Kokatsu) vs. 欠乏 (Ketsubou)
- 枯渇: To dry up completely. Used for wells, resources (oil), or ideas (creativity). It implies that the source has been drained to zero.
欠乏: A state of being insufficient. It doesn't necessarily mean the source is gone, just that the current supply is dangerously low.
アイディアが枯渇した。（Ideas dried up completely.）
アイディアが欠乏している。（There is a severe lack of ideas.）
Then there is 払底 (futtei). This is an extremely formal word used when the market supply of something has completely run out. You might see this in a newspaper during a crisis: 'マスクの在庫が払底している' (The stock of masks has been completely exhausted). This is more about 'availability in the market' than a 'deficiency in the body.'
「欠乏」の類義語には、他にも「欠落」「払底」「僅少」などがありますが、文脈によって使い分けが必要です。
In summary, choose 欠乏 when you want to emphasize the seriousness and the 'essential' nature of what is missing. It is the language of science, policy, and deep human need.
Ejemplos por nivel
水がないです。
There is no water.
Uses 'nai' for simple lack.
お金がたりません。
I don't have enough money.
Uses 'tarimasen' for 'not enough'.
たべものが少ししかありません。
There is only a little food.
Uses 'shika... arimasen' for scarcity.
今日は休みがありません。
There is no break today.
Simple 'nai' for absence.
野菜を食べてください。
Please eat vegetables.
Implicitly avoiding deficiency.
本がありません。
There are no books.
Basic existence negation.
塩がたりないです。
There is not enough salt.
Common usage for 'insufficient'.
時間がありません。
I have no time.
Standard phrase for lack of time.
野菜を食べないと、栄養が不足します。
If you don't eat vegetables, you will lack nutrition.
Uses 'busoku' (insufficient) as a precursor to 'ketsubou'.
この村には、きれいな水が不足しています。
This village lacks clean water.
Uses 'busoku shiteiru' for a serious shortage.
テストの時間が足りませんでした。
I didn't have enough time for the test.
Past tense of 'tarinai'.
すいみん不足は体に悪いです。
Lack of sleep is bad for the body.
Compound noun 'suimin-busoku'.
お金が不足して、旅行に行けません。
I lack enough money, so I can't go on a trip.
Reasoning using 'te' form.
運動不足に気をつけてください。
Please be careful about lack of exercise.
Common health warning.
このスープは味が少し足りない。
This soup lacks a bit of flavor.
Informal 'tarinai'.
経験が不足しているので、練習します。
I lack experience, so I will practice.
Using 'node' for explanation.
砂漠では水が欠乏することがあります。
In the desert, water can become scarce.
Uses 'ketsubou suru' for serious environmental lack.
ビタミンが欠乏すると、病気になるかもしれません。
If you lack vitamins, you might get sick.
Clinical use of 'ketsubou'.
その国は深刻な食糧欠乏に苦しんでいます。
The country is suffering from a severe food shortage.
Noun phrase 'shokuryou ketsubou'.
資金の欠乏により、新しいビルは建てられませんでした。
Due to a lack of funds, the new building could not be built.
Formal 'ni yori' (due to).
彼は愛情の欠乏を感じて育ちました。
He grew up feeling a lack of love.
Abstract usage for emotions.
酸素が欠乏すると、頭が痛くなります。
When oxygen is lacking, your head starts to hurt.
Technical/scientific context.
この植物は日光の欠乏で枯れてしまった。
This plant withered due to a lack of sunlight.
Causal relationship with 'de'.
睡眠の欠乏は、集中力を低下させます。
A lack of sleep reduces concentration.
Formal noun usage.
鉄分の欠乏は、貧血の主な原因となります。
Iron deficiency is a major cause of anemia.
Medical terminology.
戦時中、人々はひどい物資の欠乏に耐えなければならなかった。
During the war, people had to endure a terrible lack of supplies.
Historical/societal context.
この地域は万年的な水の欠乏に悩まされている。
This region suffers from a chronic lack of water.
Adjective 'mannen-teki' (chronic) + 'ketsubou'.
その政治家は良識が欠乏していると批判された。
The politician was criticized for lacking common sense.
Critical abstract usage.
燃料の欠乏により、輸送網が麻痺した。
Due to a lack of fuel, the transportation network was paralyzed.
Logistical context.
亜鉛の欠乏は味覚障害を引き起こすことがある。
Zinc deficiency can cause taste disorders.
Formal scientific explanation.
都市部では緑地の欠乏が問題視されている。
The lack of green spaces is seen as a problem in urban areas.
Urban planning context.
彼は、自身の道徳心の欠乏を自覚していない。
He is not aware of his own lack of moral sense.
Deep character description.
想像力の欠乏は、技術の進歩を阻害する要因となり得る。
A lack of imagination can be a factor that hinders technological progress.
Abstract philosophical usage.
その論文は、客観的な証拠の欠乏を指摘された。
The paper was pointed out for its lack of objective evidence.
Academic critique context.
慢性的な睡眠欠乏は、認知機能に多大な悪影響を及ぼす。
Chronic sleep deficiency has a significant negative impact on cognitive function.
Scientific/Medical formal style.
資源の欠乏が、国家間の緊張を極限まで高めている。
The scarcity of resources is heightening tensions between nations to the limit.
Geopolitical context.
この教育システムは、独創性の欠乏を招く恐れがある。
This education system risks leading to a lack of originality.
Societal/Educational critique.
酸素欠乏状態に陥ると、数分で意識を失う。
When falling into an oxygen-deficient state, one loses consciousness in minutes.
Technical safety term 'sanso-ketsubou-joutai'.
資本の欠乏により、中小企業の倒産が相次いでいる。
Due to a lack of capital, small and medium-sized enterprises are going bankrupt one after another.
Economic/Business formal style.
彼の沈黙は、言葉の欠乏ではなく、深い絶望の表れだった。
His silence was not a lack of words, but an expression of deep despair.
Literary/Poetic usage.
存在論的な意味での「欠乏」こそが、人間の欲望の根源である。
Scarcity in an ontological sense is the very root of human desire.
Philosophical discourse.
市場における流動性の欠乏が、金融システムの崩壊を招いた。
The lack of liquidity in the market led to the collapse of the financial system.
High-level economic analysis.
法整備の欠乏が、デジタル経済の健全な発展を阻んでいる。
The lack of legal frameworks is hindering the healthy development of the digital economy.
Policy and legal context.
その詩篇において、欠乏は単なる不足ではなく、神聖な空白として描かれている。
In that psalm, deficiency is depicted not merely as a lack but as a sacred void.
Literary analysis.
情報の欠乏ではなく、むしろ過剰が、現代の判断能力を麻痺させている。
It is not a lack of information, but rather an excess, that is paralyzing modern judgment.
Sociological commentary.
共感の欠乏は、グローバル社会における分断を加速させる。
A lack of empathy accelerates fragmentation in global society.
Global political discourse.
歴史学者は、一次資料の欠乏がいかに解釈を歪めるかを論じた。
The historian discussed how the lack of primary sources distorts interpretation.
Historiographical context.
美的感性の欠乏した建築物が、都市の景観を破壊している。
Buildings lacking aesthetic sensibility are destroying the city's landscape.
Architectural criticism.
Colocaciones comunes
Summary
欠乏 (ketsubou) is your 'serious shortage' word. Use it for life-and-death or professional topics like vitamin deficiencies (ビタミン欠乏) or national resource crises (資源の欠乏). Avoid it for trivial things like running out of milk.
- A formal term for a severe, critical lack of essential resources or nutrients.
- Commonly used in medical (deficiency), economic (scarcity), and news contexts.
- More serious and formal than '不足' (busoku); implies a dire or pathological state.
- Often functions as a noun (〜の欠乏) or an intransitive verb (〜が欠乏する).
Ejemplo
深刻な食糧欠乏が社会問題となっている。
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