透明
透明 in 30 Seconds
- Primary meaning: Physical transparency (clear, see-through).
- Secondary meaning: Metaphorical openness (honesty, accountability).
- Grammar: Na-adjective (requires 'na' for nouns, 'de' or 'desu' for endings).
- Common usage: Clear umbrellas, water clarity, and business transparency.
The Japanese word 透明 (tōmei) is a sophisticated yet common term that primarily translates to 'transparent' or 'clear' in English. Structurally, it is a na-adjective (形容動詞), meaning it requires the particle 'na' when modifying a noun directly, such as in 透明な水 (tōmei na mizu - transparent water). The word is composed of two kanji characters: 透 (tō), which carries the meaning of 'to permeate,' 'to pass through,' or 'to be transparent,' and 明 (mei), which signifies 'bright,' 'light,' or 'clear.' Together, they create a concept of something so clear that light passes through it without obstruction, allowing one to see what lies on the other side. While its most literal application is in the physical world—describing objects like glass, water, or plastic—its usage extends far into the abstract realms of sociology, politics, and aesthetics.
- Physical Clarity
- This refers to the literal state of an object. If you are looking at a window that is so clean it looks like there is no glass at all, you would describe it as 透明. It is used for liquids that are not murky, gases that are invisible, and solids like crystals or diamonds. In a Japanese kitchen, you might hear a chef describe a high-quality dashi broth as being beautifully 透明, indicating its purity and lack of sediment.
このプラスチックの容器は完全に透明で、中身がよく見えます。(Kono purasuchikku no yōki wa kanzen ni tōmei de, nakami ga yoku miemasu.) - This plastic container is completely transparent, and you can see the contents clearly.
- Metaphorical Transparency
- In modern Japanese society, much like in English, 透明 is used to discuss the 'transparency' of organizations, government processes, or corporate governance. This is often expressed as 透明性 (tōmeisei - transparency/openness). A company that hides its financial records lacks 透明性. Furthermore, it can describe a person's character or heart (心) as being pure and without hidden agendas, though this is a more poetic or literary usage. In the world of beauty and skincare, the term 透明感 (tōmeikan) is a highly coveted attribute, referring to skin that looks 'translucent,' 'clear,' and 'radiant,' rather than literally see-through.
Culturally, the concept of 透明 is deeply embedded in Japanese aesthetics, which often value minimalism, purity, and the 'unseen.' In literature and anime, the trope of the 透明人間 (tōmei ningen - invisible man) is a staple, representing themes of isolation or the desire to observe the world without being noticed. The word captures the essence of something that exists but does not obstruct, a quality that is admired in both natural landscapes and social interactions where 'reading the air' (kuuki wo yomu) requires a certain level of clarity and lack of ego. Whether you are talking about the clear waters of a mountain stream in Nagano or the need for more open political discourse, 透明 is your essential bridge between the visible and the invisible.
政治の透明性を高めることが、国民の信頼を取り戻す鍵だ。(Seiji no tōmeisei wo takameru koto ga, kokumin no shinkai wo torimodosu kagi da.) - Increasing political transparency is the key to regaining the public's trust.
Using 透明 correctly requires understanding its grammatical role as a na-adjective. This means it behaves like a noun in some contexts but functions as an adjective when modifying other words. Understanding these patterns is crucial for moving from basic Japanese to a more natural, B1-level proficiency. Let's break down the primary ways to integrate this word into your speech and writing.
- Modifying Nouns (Attributive Use)
- When you want to describe a noun as being transparent, you must place な (na) between 透明 and the noun. For example, 透明な袋 (tōmei na fukuro - a transparent bag) or 透明な液体 (tōmei na ekitai - a transparent liquid). This is the most common way you will encounter the word in everyday situations, such as shopping or describing laboratory experiments.
空港の保安検査では、透明なプラスチック袋に液体を入れる必要があります。(Kuukou no hoan kensa dewa, tōmei na purasuchikku bukuro ni ekitai wo ireru hitsuyō ga arimasu.) - At airport security checks, you need to put liquids in a transparent plastic bag.
- Ending a Sentence (Predicative Use)
- To say 'Something IS transparent,' you follow the word with the copula だ (da) or its polite form です (desu). For instance, このガラスは非常に透明です (Kono garasu wa hijō ni tōmei desu - This glass is extremely transparent). Note that you do NOT use 'na' here. In the past tense, it becomes 透明でした (tōmei deshita - was transparent).
昔のこの川の水は、底の石が見えるほど透明でした。(Mukashi no kono kawa no mizu wa, soko no ishi ga mieru hodo tōmei deshita.) - In the old days, the water in this river was so transparent that you could see the stones at the bottom.
- Adverbial Use
- By changing 'na' to に (ni), you can use 透明 as an adverb to describe how an action is performed or how a state changes. 透明にする (tōmei ni suru) means 'to make something transparent' or 'to clear something up.' For example, in a photo editing app, you might 'make the background transparent' (haikei wo tōmei ni suru).
Finally, consider the compound form 不透明 (futōmei), created by adding the prefix 'fu-' (not). This is incredibly common in news reports regarding 'opaque' or 'unclear' situations. If a project's future is uncertain, you would say 先行きが不透明だ (sakiyuki ga futōmei da - the future outlook is opaque/unclear). Mastering both the positive and negative forms allows you to describe a wide range of physical and conceptual states with precision.
不純物を取り除いて、液体を透明にした。(Fujunbutsu wo torinozoite, ekitai wo tōmei ni shita.) - I removed the impurities and made the liquid transparent.
The word 透明 isn't just a textbook term; it's vibrant and omnipresent in Japanese daily life, media, and professional environments. Understanding these contexts helps you recognize the word in the wild and use it with the correct 'vibe.' From the mundane to the high-tech, here is where you will encounter it most often.
- Daily Shopping and Products
- Walk into a 100-yen shop (Daiso or Seria) or a convenience store, and you'll see labels for 透明テープ (tōmei tēpu - transparent tape), 透明ケース (tōmei kēsu - clear cases), and 透明傘 (tōmei gasa - those iconic clear umbrellas seen everywhere in Tokyo on rainy days). Clerks might ask if you want a 透明な袋 for your items. In these contexts, the word is strictly functional and descriptive.
雨の日、渋谷のスクランブル交差点は透明な傘でいっぱいになります。(Ame no hi, Shibuya no sukuranburu kousaten wa tōmei na kasa de ippai ni narimasu.) - On rainy days, Shibuya Crossing becomes filled with transparent umbrellas.
- Science and Education
- In school or documentaries, 透明 is the standard term for transparency in biology and chemistry. You might hear about 透明な細胞 (tōmei na saibō - transparent cells) or the 透明度 (tōmeido - transparency level/clarity) of a lake. If you visit Lake Mashu in Hokkaido, the guides will constantly boast about its world-class 透明度. Scientists also use it when discussing light refraction and optics.
- News, Business, and Politics
- This is where you'll hear the abstract side. News anchors often discuss 情報の透明性 (jōhō no tōmeisei - information transparency) or 不透明な決算 (futōmei na kessan - opaque/unclear financial settlements). In business meetings, a manager might say, 'We need to make our decision-making process more 透明.' It carries a weight of accountability and honesty in these professional settings.
Pop culture also embraces the word. From 'The Invisible Man' movies to J-pop songs like 'Tōmei Ningen' by Tokyo Jihen, the word often symbolizes the feeling of being overlooked or having a soul so pure it's invisible. In beauty commercials, watch for the word 透明感 (tōmeikan) splashed across the screen, promising that a lotion will give you clear, radiant skin. Whether you're reading a scientific report, a fashion magazine, or a political critique, 透明 is a high-frequency word that bridges the gap between the physical and the conceptual.
この化粧水を使うと、肌に透明感が出ます。(Kono keshousui wo tsukau to, hada ni tōmeikan ga demasu.) - Using this lotion gives your skin a sense of translucency.
Even intermediate learners often trip up on the nuances of 透明. Because 'clear' in English has so many meanings (clear sky, clear voice, clear explanation), it's easy to over-apply the Japanese word 透明 where it doesn't belong. Let's look at the most frequent errors and how to avoid them.
- Mistake 1: 'Clear Sky'
- In English, we say 'a clear sky.' If you say 透明な空 (tōmei na sora), a Japanese person will imagine a sky that has literally vanished, or perhaps a sci-fi scenario. For a clear, cloudless sky, use 晴れた空 (hareta sora) or 快晴 (kaisei). 透明 implies you can see through the object, but the sky isn't an object you look through to see something else in the same way.
❌ 透明な空の下でピクニックをした。
✅ 晴れ渡った空の下でピクニックをした。
- Mistake 2: 'Clear Explanation'
- If a teacher gives a clear explanation, don't use 透明. Instead, use 分かりやすい (wakari yasui - easy to understand) or 明確な (meikaku na - clear/distinct). 透明 refers to the quality of light passing through or the openness of a system, not the clarity of logic or instructions.
- Mistake 3: Confusing with 'Kirei'
- Learners sometimes use 透明 when they mean 'clean' or 'beautiful.' While clear water is often beautiful, きれい (kirei) is the word for aesthetic beauty or physical cleanliness. 透明 is a specific physical property. You can have 透明 water that is actually full of invisible bacteria—it's clear, but not きれい!
Another subtle mistake is using 透明 for 'clear sound' or 'clear voice.' For audio clarity, the correct term is 澄んだ (sunda - clear/pure) or クリアな (kuria na). For example, 澄んだ声 (sunda koe - a clear/pure voice). By distinguishing between these various types of 'clarity,' you'll sound much more like a native speaker and avoid confusing your listeners with descriptions of invisible voices or see-through explanations.
❌ 彼の説明は透明だった。
✅ 彼の説明は明確だった。(His explanation was clear/distinct.)
To truly master the concept of 'clarity' in Japanese, you need to know the alternatives to 透明 and when to choose them. Japanese has a rich vocabulary for describing different types of transparency and clarity, often with subtle emotional or physical distinctions.
- 透き通る (Sukitōru)
- This is a verb that means 'to be transparent' or 'to be seen through.' While 透明 is a noun/adjective, 透き通る is often used to describe natural beauty. 透き通った青い海 (sukitōtta aoi umi - a transparent blue sea) sounds more poetic and evocative than 透明な海. Use the verb form when you want to emphasize the action of light passing through or the feeling of purity.
彼女の透き通るような歌声に感動した。(Kanojo no sukitōru you na utagoe ni kandou shita.) - I was moved by her voice, which was clear as if you could see through it.
- クリア (Kuria)
- Borrowed from the English 'clear,' this katakana word is used frequently in modern contexts, especially regarding technology, audio, and gaming. You might talk about a クリアな画質 (kuria na gashitsu - clear image quality) or クリアな音 (kuria na oto - clear sound). It feels more modern and technical than the traditional 透明.
- 明白 (Meihaku) and 明確 (Meikaku)
- These words are used for logical or conceptual clarity. 明白 means 'obvious' or 'clear as day' (e.g., a clear mistake), while 明確 means 'distinct' or 'well-defined' (e.g., a clear goal). If you are talking about facts or plans, reach for these instead of 透明.
Finally, don't forget the opposite, 不透明 (futōmei). While we have 'opaque' in English, 不透明 is used much more broadly in Japanese to mean 'uncertain' or 'shrouded in mystery.' If a sports match outcome is hard to predict, or if a government's motive is hidden, 不透明 is the perfect choice. By learning these synonyms and antonyms, you gain the ability to choose the exact 'flavor' of clarity required for your specific situation.
景気の先行きは依然として不透明だ。(Keiki no sakiyuki wa izentoshite futōmei da.) - The future of the economy remains opaque/uncertain.
Examples by Level
このコップは透明です。
This cup is transparent.
Basic predicative use with 'desu'.
透明な水がほしいです。
I want some clear water.
Attributive use with 'na' modifying 'mizu'.
透明な袋に入れてください。
Please put it in a transparent bag.
Attributive use with 'na' modifying 'fukuro'.
それは透明ですか?
Is that transparent?
Question form of a na-adjective.
このガラスは透明じゃないです。
This glass is not transparent.
Negative form 'janai desu'.
透明なテープをください。
Please give me some transparent tape.
Common noun phrase 'tōmei na tēpu'.
海が透明できれいです。
The sea is transparent and beautiful.
Using 'de' to connect two adjectives (tōmei + kirei).
透明なペンケースを買いました。
I bought a transparent pencil case.
Simple past tense verb with an adjective-noun phrase.
雨の日は透明な傘を使います。
I use a transparent umbrella on rainy days.
Describing a common daily habit.
この箱は透明だから、中が見えます。
Because this box is transparent, you can see inside.
Using 'dakara' (because) with a na-adjective.
透明なプラスチックの板を探しています。
I am looking for a transparent plastic sheet.
Adjective modifying a compound noun.
金魚鉢の水は透明でなければなりません。
The water in the fishbowl must be transparent.
Must be: 'de nakereba narimasen'.
彼は透明人間になりたいと言いました。
He said he wants to become an invisible man.
Noun compound 'tōmei ningen'.
この窓ガラスはとても透明で、まるでないようです。
This window glass is so transparent, it's like it's not even there.
Using 'de' to continue the description.
もっと透明な色がほしいです。
I want a more transparent color.
Using 'motto' (more) with the adjective.
不透明な容器には何を入れましたか?
What did you put in the non-transparent container?
Using the antonym 'futōmei'.
会社は経営の透明性を高めるべきだ。
The company should increase the transparency of its management.
Abstract noun 'tōmeisei' (transparency).
彼女の肌には透明感がある。
Her skin has a sense of translucency.
Suffix '-kan' meaning 'sense of' or 'feeling of'.
このアプリで背景を透明にできます。
You can make the background transparent with this app.
Adverbial use 'tōmei ni' with 'suru' (to make).
情報の透明性が求められている。
Information transparency is being demanded.
Passive voice 'motomerarete iru'.
透明な心を持つことは大切です。
It is important to have a transparent (pure) heart.
Metaphorical use for personality.
不透明な決断に不満が募っている。
Dissatisfaction is growing over the opaque decision.
Using 'futōmei' for lack of clarity in process.
この素材は光を通すので、透明に見えます。
This material lets light through, so it looks transparent.
Explaining physical properties.
選考プロセスをより透明にする必要があります。
It is necessary to make the selection process more transparent.
Using 'yori' (more) for comparison.
政治資金の流れを透明化することが急務だ。
Making the flow of political funds transparent is an urgent task.
Suffix '-ka' (tōmeika) meaning '-ization'.
景気の先行きは極めて不透明である。
The future outlook for the economy is extremely opaque/uncertain.
Formal 'de aru' ending for business/news.
透明度の高い湖として知られている。
It is known as a lake with high transparency (clarity).
Noun 'tōmeido' (degree of transparency).
組織の不透明な体質が問題視された。
The organization's opaque nature was seen as a problem.
Describing corporate culture.
透明電極は、スマートフォンの画面に不可欠な部品だ。
Transparent electrodes are essential components for smartphone screens.
Technical/Scientific compound.
この映画は、思春期の透明な感情を見事に描いている。
This movie brilliantly depicts the transparent (pure/fragile) emotions of adolescence.
Literary/Artistic usage.
裁判の透明性を確保するために、傍聴が認められている。
To ensure the transparency of the trial, public observation is permitted.
Discussing legal rights.
不透明な取引を排除するための新しい規制が導入された。
New regulations were introduced to eliminate opaque transactions.
Business regulation context.
近代建築は、透明な空間を追求することで、内と外の境界を曖昧にした。
Modern architecture blurred the boundary between inside and outside by pursuing transparent spaces.
Architectural theory context.
アルゴリズムの透明性が欠如していることが、社会的な懸念となっている。
The lack of algorithm transparency is becoming a social concern.
Discussing AI ethics.
彼女の文体は、まるで透明な水のように淀みがない。
Her writing style is as clear and fluid as transparent water.
Literary simile.
企業の社会的責任として、サプライチェーンの透明化が求められている。
As a matter of corporate social responsibility, transparency in the supply chain is required.
CSR and logistics context.
その詩人は、日常の中に潜む透明な孤独を言葉にした。
The poet put into words the transparent (unseen/pure) loneliness lurking in daily life.
Abstract poetic expression.
不透明な政治状況の中で、国民は確かなリーダーシップを待ち望んでいる。
Amidst an opaque political situation, the citizens are longing for steady leadership.
Sophisticated political analysis.
この研究は、ナノ粒子を用いて材料を透明化する技術に焦点を当てている。
This research focuses on the technology of making materials transparent using nanoparticles.
Advanced scientific context.
意思決定のプロセスが不透明であればあるほど、組織の腐敗は進みやすい。
The more opaque the decision-making process is, the easier it is for organizational corruption to spread.
Using 'ba hodo' (the more... the more...).
谷崎潤一郎は『陰翳礼讃』において、西洋的な透明性への志向を批判的に考察した。
In 'In Praise of Shadows,' Jun'ichirō Tanizaki critically examined the Western inclination towards transparency.
Literary and cultural criticism.
量子力学の観点からは、物質が『透明』であるという現象は、光子と電子の相互作用の結果に過ぎない。
From the perspective of quantum mechanics, the phenomenon of matter being 'transparent' is merely the result of interactions between photons and electrons.
High-level scientific discourse.
現代社会における監視カメラの遍在は、プライバシーが透明化される恐怖を人々に植え付けている。
The omnipresence of surveillance cameras in modern society has instilled in people a fear of their privacy being made transparent.
Sociological critique.
彼の沈黙は、雄弁な言葉よりも雄弁に、その場の不透明な空気を物語っていた。
His silence spoke more eloquently than any words about the opaque atmosphere of the room.
Metaphorical use in high literature.
デジタル・フォレンジックにおいて、データの透明性を担保することは法的な証拠能力に直結する。
In digital forensics, ensuring data transparency is directly linked to legal admissibility.
Technical legal/IT jargon.
自己の意識を透明化し、他者との共感を極限まで高めることが、その修行の目的であった。
The goal of the ascetic practice was to make one's own consciousness transparent and to heighten empathy with others to the extreme.
Philosophical/Religious context.
グローバル経済の不透明性が増す中で、企業にはより強靭なレジリエンスが求められている。
As the opacity of the global economy increases, companies are required to have stronger resilience.
Macroeconomic analysis.
この論文は、言語の透明性という神話がいかにして権力構造を隠蔽してきたかを論じている。
This paper discusses how the myth of language transparency has concealed power structures.
Post-structuralist linguistic theory.
Common Collocations
Summary
The word 透明 (tōmei) is the essential Japanese term for 'transparency.' While it literally describes objects like glass or water, its most powerful use in modern Japanese is describing the openness of organizations and the radiant quality of skin (tōmeikan). Example: 透明な傘 (clear umbrella).
- Primary meaning: Physical transparency (clear, see-through).
- Secondary meaning: Metaphorical openness (honesty, accountability).
- Grammar: Na-adjective (requires 'na' for nouns, 'de' or 'desu' for endings).
- Common usage: Clear umbrellas, water clarity, and business transparency.
Related Content
This Word in Other Languages
More nature words
~上
B1Above; on top of; up.
〜の上
A2On top of, above, upon.
豊か
B1Abundant; rich; plentiful (na-adjective).
〜に従って
B1According to, in conformity with, as (something happens).
酸性雨
B1Acid rain.
営み
B1Activity; daily life; undertaking (e.g., life's activities).
順応する
B1To adapt; to adjust; to conform.
~を背景に
B1Against the backdrop of; with...as background.
空気
A2air
大気汚染
B1Air pollution; the presence of harmful substances in the air.