投資 in 30 Seconds
- 投資 (tōshi) means 'investment.' It is used for financial assets like stocks, but also for time and effort in personal growth.
- It functions as a noun or a Suru-verb (投資する). The target of the investment is marked with the particle 'に' (ni).
- Key compound terms include 自己投資 (self-investment), 投資家 (investor), and 設備投資 (capital investment in equipment).
- Culturally, it has shifted from being seen as 'risky' to being a 'smart/necessary' part of life planning in modern Japan.
The Japanese word 投資 (とうし - tōshi) is a cornerstone of modern Japanese vocabulary, reflecting the concept of 'investment' in its broadest and most specific senses. At its core, it is a noun that combines the characters 投 (to throw, cast, or send) and 資 (resources, capital, or assets). Literally, it suggests the act of 'casting resources' into a venture or project with the expectation of a future return. While most commonly associated with financial markets—stocks, bonds, and real estate—its usage extends significantly into personal growth, education, and social relationships. For a Japanese speaker, 投資 isn't just about money; it's about the strategic allocation of finite resources like time, energy, and effort to build a better future. Whether you are talking about a multi-billion yen infrastructure project or simply spending two hours a day learning Japanese, you are engaging in 投資.
- Financial Context
- In the world of finance, 投資 refers to the purchase of assets with the goal of generating income or appreciation. Common terms include 株式投資 (stock investment) and 不動産投資 (real estate investment). In recent years, the Japanese government has been promoting the shift 'from savings to investment' (貯蓄から投資へ), making this word extremely frequent in news and daily economic discussions.
- Self-Improvement
- The phrase 自己投資 (じことうし - jiko tōshi), meaning 'self-investment,' is a very popular concept in Japan. It refers to spending money or time on education, skills, health, or experiences that will improve one's future self. For example, buying books or paying for a gym membership is seen as a vital 投資.
将来のために、今から自己投資を始めることが大切です。
The word carries a nuance of calculated risk and long-term vision. Unlike gambling (ギャンブル), which is seen as luck-based and often destructive, 投資 is viewed as a rational, constructive activity. In professional settings, managers discuss 'human capital investment' (人的投資) to describe training employees. In social contexts, parents might talk about the 'investment' they make in their children's education (教育への投資). The breadth of the word makes it essential for anyone wanting to discuss planning, progress, or economics in Japanese. Understanding the cultural weight of 投資 also involves recognizing the historical shift in Japan; for decades, the Japanese public preferred safe bank savings (貯金), but the modern era has forced a re-evaluation of 投資 as a necessary tool for retirement planning and economic survival.
新しいビジネスに多額の資金を投資した。
Using 投資 correctly requires understanding its role as a 'Suru-verb' (a noun that becomes a verb by adding する). This flexibility allows it to function as the subject of a sentence, an object, or the action itself. When you want to say 'to invest in [something],' the grammatical structure is typically [Something] に 投資する. The particle 'に' is crucial here as it marks the destination or direction of your resources. If you are specifying what you are investing (like time or money), you use the particle 'を' for that resource: [Resource] を [Target] に 投資する.
- Direct Object Usage
- When 投資 is the noun being acted upon, you might say '投資を増やす' (to increase investments) or '投資を回収する' (to recover/recoup an investment). This is common in business reporting.
- Compound Nouns
- 投資 often attaches to other nouns to create specific terms. 投資家 (tōshika) means 'investor,' 投資信託 (tōshi shintaku) means 'investment trust' or 'mutual fund,' and 投資額 (tōshigaku) means 'investment amount.'
彼は自分のスキルアップのために、時間と労力を投資している。
In more advanced contexts, you will see 投資 used in passive constructions, such as '資金が新しい技術の開発に投資された' (Capital was invested in the development of new technology). It's also important to note the formality. While 投資 is appropriate for both formal business and casual advice, it retains a slightly serious tone. If you are talking about something very trivial, like buying a fancy coffee, using 投資 might sound ironic or humorous, as if you are treating the coffee as a serious life-improving asset. However, for things like health and education, it is used with absolute sincerity.
政府はインフラ整備への投資を拡大することを決定した。
健康への投資は、決して無駄にはならない。
The prevalence of 投資 in daily Japanese life has skyrocketed in the last decade. You will hear it most frequently in the following environments: financial news segments, corporate boardrooms, self-help seminars, and even casual conversations among young adults planning their futures. In Japan, NHK news frequently reports on '海外投資' (overseas investment) and '設備投資' (capital investment by companies). If you visit a Japanese bank, the pamphlets will be filled with '投資' terminology, especially concerning NISA (Nippon Individual Savings Account), a tax-free investment program that has become a household name.
- In the Workplace
- Managers often discuss 'IT投資' (IT investment) to justify upgrading systems. During annual reviews, an employee might be told to 'invest more in their professional development' (キャリア形成への投資).
- Social Media and Podcasts
- Japanese YouTubers in the 'FIRE' (Financial Independence, Retire Early) community use 投資 constantly, explaining '分散投資' (diversified investment) and '長期投資' (long-term investment).
最近、若い世代の間で株式投資への関心が高まっています。
You might also hear it in the context of 'social investment' (社会的投資), where people or organizations put money into ventures that provide social benefits alongside financial returns. In educational settings, teachers might encourage students to see their study hours as an 'investment in their future' (将来への投資). Because the word implies a positive outcome, it is often used as a motivational tool. However, be aware that in some older circles, 投資 still carries a slight stigma of 'playing with money' or 'unearned income,' though this view is rapidly fading as economic literacy increases across the country.
これは単なる買い物ではなく、自分への投資だと思っています。
While 投資 is a straightforward word, learners often trip up on its distinction from similar concepts. The most common mistake is confusing 投資 with 投機 (とうき - tōki). While both involve putting money into something, 投機 refers to 'speculation'—aiming for short-term gains through high-risk moves, often based on market fluctuations. Using 投資 when you mean 投機 can make you sound less precise, especially in a professional financial environment. Another common error is the misuse of particles. Learners often use 'を' when they should use 'に' (e.g., saying '株を投資する' instead of '株に投資する'). Remember, you invest *into* something (に).
- Confusion with 浪費 (Rouhi)
- Don't confuse 投資 with 浪費 (waste). If you spend money on something that doesn't provide future value, it's 浪費. Some people try to justify 浪費 by calling it 自己投資 (self-investment), which is a common joke or excuse in casual Japanese conversation.
- Confusion with 融資 (Yuushi)
- 融資 means 'financing' or 'loaning.' In 投資, you take an ownership stake or expect a return from the venture's success. In 融資, you are lending money that must be paid back with interest, regardless of the venture's ultimate success.
× 競馬に投資する。
○ 競馬でギャンブルをする。
Additionally, be careful with the word 'chokin' (savings). In English, we might say 'I'm investing in my savings account,' but in Japanese, 投資 and 貯金 are strictly separated. 貯金 is putting money in a bank for safekeeping, while 投資 is putting it into assets to grow. Mixing these up in a financial discussion can lead to confusion about your actual financial strategy. Lastly, ensure you don't overuse the term for very small, mundane tasks. While 'investing' five minutes to clean your desk is technically a use of time, it sounds overly dramatic in Japanese. Reserve 投資 for things that have a significant impact or require a deliberate allocation of resources.
Japanese has several words related to the concept of putting resources into something, and choosing the right one depends on the context and the nature of the return. While 投資 is the most general term, other words offer more precision for specific situations. For example, when talking specifically about providing capital to start a business, 出資 (しゅっし - shusshi) is often more appropriate. It specifically means 'capital contribution' or 'financing' in terms of equity. If you are talking about managing your existing assets to make them grow, 運用 (うんよう - un'yō), as in '資産運用' (asset management), is the standard term.
- 投資 vs. 出資 (Shusshi)
- 投資 is the broad act of investing. 出資 is the specific act of providing capital to a company or project, often in exchange for shares. A venture capitalist does 'shusshi' as part of their 'tōshi' strategy.
- 投資 vs. 投機 (Touki)
- As mentioned before, 投機 is speculation. It focuses on price changes and short-term profit, whereas 投資 focuses on the underlying value and long-term growth of the asset.
- 投資 vs. 寄付 (Kifu)
- 寄付 means 'donation.' In 寄付, you do not expect a financial return; the goal is purely philanthropic. In 投資, even 'social investment,' there is an expectation of a return, whether it's financial or a measurable social improvement.
彼は資産を効率的に運用している。
Another alternative is 投入 (とうにゅう - tōnyū), which means 'throwing in' or 'releasing' resources. While it can be used for money, it is more physical or operational, such as 'throwing more troops into a battle' or 'releasing a new product into the market.' Finally, 充当 (じゅうとう - jūtō) is a very formal term used when allocating specific funds for a specific purpose, often in accounting or government budgets. Understanding these distinctions allows you to navigate the complexities of Japanese business and personal planning with the precision of a native speaker.
ベンチャー企業に資金を出資することにした。
How Formal Is It?
Fun Fact
The character 投 (tō) is the same one used in 'pitcher' (投手 - tōshu) in baseball. So, in a sense, an investor is a 'pitcher' of money.
Pronunciation Guide
- Pronouncing it as 'toshi' (short 'o') which means 'year' or 'city'.
- Confusing the pitch with 'doushi' (verb/comrade).
- Over-emphasizing the 'shi' like an English 'she'.
- Nasalizing the 'n' sound (though there is no 'n' in tōshi, learners sometimes add one).
- Failing to elongate the 'o' vowel.
Difficulty Rating
The kanji are common but require knowledge of the 'shi' and 'tō' readings.
The kanji 資 (resources) has many strokes and can be easily confused with similar-looking characters.
Easy to pronounce, but watch the long vowel 'ō'.
Distinctive sound, though can be confused with 'toshi' (year/city).
What to Learn Next
Prerequisites
Learn Next
Advanced
Grammar to Know
Suru-verbs (Noun + する)
投資する (To invest)
The particle 'に' for destination/target
株に投資する (Invest in stocks)
The particle 'を' for resources
お金を投資する (Invest money)
The particle 'への' (to/towards for nouns)
自分への投資 (Investment in/towards myself)
Passive voice with Suru-verbs
資金が投資される (Capital is invested)
Examples by Level
私は日本語の勉強に時間を投資します。
I will invest time in studying Japanese.
Uses 'に' to mark the target (勉強) and 'を' (implied or explicit) for the resource (時間).
これは自分への投資です。
This is an investment in myself.
Noun usage: [Target] への [Noun].
本を買うのは良い投資です。
Buying books is a good investment.
Simple noun predicate: [A] は [B] です。
将来のために投資したいです。
I want to invest for the future.
Verb 'tai' form (want to): 投資したい.
健康に投資しましょう。
Let's invest in our health.
Hortative 'mashou' form: 投資しましょう。
父は株に投資しています。
My father is investing in stocks.
Present progressive: 投資しています。
投資は難しいですか？
Is investing difficult?
Question form using the noun '投資'.
少しずつ投資を始めます。
I will start investing little by little.
Adverbial phrase '少しずつ' (little by little).
新しいパソコンは仕事への投資だ。
A new computer is an investment in my work.
Informal 'da' ending.
投資家になりたいと思っています。
I am thinking that I want to become an investor.
Uses '投資家' (investor) and '～と思っています' (thinking of doing).
お金を貯めるより投資する方がいい。
It is better to invest than to save money.
Comparison structure: [A] より [B] 方がいい。
彼は教育に多くのお金を投資した。
He invested a lot of money in education.
Past tense 'toshita'.
投資の基本を学びましょう。
Let's learn the basics of investment.
Noun phrase: 投資の基本 (basics of investment).
毎月一万円を投資に回しています。
I am putting 10,000 yen into investment every month.
Verb 'mawasu' (to turn/allocate towards).
この会社に投資するのは危険です。
It is dangerous to invest in this company.
Nominalizing the verb with 'no': 投資するのは.
自己投資として英会話を習っています。
I am learning English conversation as a self-investment.
Using '～として' (as/in the capacity of).
政府は新しいエネルギー産業に投資している。
The government is investing in the new energy industry.
Formal subject '政府' (government).
設備投資を増やすことで生産性を上げます。
We will increase productivity by increasing capital investment.
Compound noun '設備投資' (capital investment).
投資信託なら初心者でも始めやすいですよ。
If it's an investment trust, even beginners can start easily.
Uses '投資信託' (mutual fund) and '～やすい' (easy to).
長期的な視点で投資を行うことが重要です。
It is important to conduct investment from a long-term perspective.
Formal phrase '行う' (to conduct/perform).
不動産投資で不労所得を得るのが夢です。
My dream is to gain passive income through real estate investment.
Uses '不動産投資' (real estate investment) and '不労所得' (passive income).
リスクを恐れて投資をしないのはもったいない。
It's a waste not to invest because you fear the risk.
Conditional phrase 'リスクを恐れて' (fearing risk).
彼は投資の失敗から多くのことを学んだ。
He learned many things from his investment failure.
Noun phrase '投資の失敗' (investment failure).
どの分野に投資すべきか迷っています。
I am wondering which field I should invest in.
Uses '～すべき' (should do).
分散投資によってリスクを軽減することができます。
You can mitigate risk through diversified investment.
Uses '分散投資' (diversified investment) and '軽減' (mitigation).
その企業は研究開発に莫大な資金を投資した。
That company invested an enormous amount of capital in R&D.
Adjective '莫大な' (enormous).
投資家たちは市場の動向を注視している。
Investors are closely watching market trends.
Verb '注視する' (to watch closely).
自己投資を怠ると、キャリアが停滞する恐れがある。
If you neglect self-investment, there is a risk your career will stagnate.
Uses '怠る' (neglect) and '恐れがある' (there is a fear/risk).
投資リターンを最大化するための戦略を練る。
To devise a strategy to maximize investment returns.
Uses '最大化' (maximization) and '練る' (to polish/devise).
インフレ対策として、金や株式に投資する人が増えている。
As a countermeasure against inflation, more people are investing in gold and stocks.
Uses '～として' (as) and '対策' (countermeasure).
ベンチャーキャピタルがそのスタートアップに投資を決定した。
Venture capital decided to invest in that startup.
Specific business term 'ベンチャーキャピタル'.
投資は自己責任で行うのが鉄則だ。
It is an ironclad rule that investment is done at one's own risk.
Uses '自己責任' (self-responsibility) and '鉄則' (ironclad rule).
機関投資家は、ESG投資を重視する傾向を強めている。
Institutional investors are increasingly emphasizing ESG investment.
Uses '機関投資家' (institutional investor) and '重視する' (to emphasize).
人的資本への投資こそが、企業の持続的な成長の鍵である。
Investment in human capital is precisely the key to a company's sustainable growth.
Emphasis particle 'こそ' (precisely/specifically).
過剰な設備投資が、かつてのバブル崩壊の一因となった。
Excessive capital investment was one cause of the previous bubble burst.
Uses '過剰な' (excessive) and '一因' (one cause).
投資協定の締結により、両国間の経済協力が促進される。
The conclusion of an investment agreement will promote economic cooperation between the two countries.
Uses '締結' (conclusion of a contract) and '促進' (promotion).
投資家心理の冷え込みが、株価の下落に拍車をかけている。
The cooling of investor sentiment is accelerating the decline in stock prices.
Idiom '拍車をかける' (to spur/accelerate).
ポートフォリオを最適化し、投資効率を極限まで高める。
Optimize the portfolio to raise investment efficiency to the limit.
Uses '最適化' (optimization) and '極限' (limit/extreme).
直接投資の受け入れは、開発途上国の経済発展に寄与する。
Accepting direct investment contributes to the economic development of developing countries.
Uses '寄与する' (to contribute).
投資の限界効率が低下する中で、新たな市場の開拓が求められている。
With the marginal efficiency of investment declining, the cultivation of new markets is required.
Economic term '限界効率' (marginal efficiency).
マクロ経済学の観点から、投資と貯蓄の均衡を考察する。
Examine the equilibrium of investment and savings from a macroeconomic perspective.
Highly academic terminology: '観点' (perspective), '均衡' (equilibrium), '考察' (examination).
投資家保護のための法整備を、国際的な基準に準拠させる必要がある。
It is necessary to bring the legal framework for investor protection into compliance with international standards.
Uses '法整備' (legal framework) and '準拠させる' (to make compliant).
投機的投資が市場のボラティリティを増幅させ、金融システムを不安定化させている。
Speculative investment is amplifying market volatility and destabilizing the financial system.
Uses '投機的' (speculative), 'ボラティリティ' (volatility), and '増幅' (amplification).
対内直接投資の障壁を撤廃し、グローバル資本の流入を促す政策を打ち出す。
Launch policies to abolish barriers to inward direct investment and encourage the inflow of global capital.
Uses '障壁' (barrier), '撤廃' (abolition), and '流入' (inflow).
不確実性の高い環境下において、投資のオプション価値をいかに評価すべきかが問われている。
In a highly uncertain environment, the question is how to evaluate the option value of investment.
Uses '不確実性' (uncertainty) and '評価すべきか' (how it should be evaluated).
企業の社会的責任としての投資が、ブランド価値の向上に直結する時代となった。
We have entered an era where investment as a form of corporate social responsibility directly leads to an increase in brand value.
Uses '直結する' (to be directly linked).
投資理論の進展により、リスク管理の手法はかつてないほど洗練されている。
With the progress of investment theory, risk management methods have become more sophisticated than ever before.
Uses '進展' (progress) and '洗練' (sophistication).
投資は単なる資本の移動ではなく、未来を形作る意思の表明である。
Investment is not merely the movement of capital, but a manifestation of the will to shape the future.
Philosophical phrasing: '意思の表明' (manifestation of will).
Common Collocations
Common Phrases
— Self-investment. Spending time/money to improve your own skills or health.
読書は最高の自己投資だ。
— Capital investment. When a company buys machines or buildings.
工場に設備投資を行う。
— Stock investment. Buying and selling shares of companies.
株式投資で資産を増やす。
— Real estate investment. Buying property to rent or sell.
将来のために不動産投資を始める。
— Long-term investment. Holding assets for many years.
長期投資はリスクが低い。
— Diversified investment. Spreading money across different assets.
分散投資でリスクを抑える。
— Institutional investor. Large organizations like banks that invest.
機関投資家の動きに注目する。
— Investment trust/Mutual fund. A pool of money managed by pros.
投資信託を毎月積み立てる。
— Investment in people/Human capital investment.
社員教育という人的投資を重視する。
— Upfront investment. Investing before seeing results.
これは将来のための先行投資だ。
Often Confused With
Touki is speculation (short-term, high risk). Tōshi is investment (long-term, calculated).
Chokin is saving money in a bank. Tōshi is putting money into assets to grow.
Yuushi is a loan. Tōshi involves ownership or profit-sharing.
Idioms & Expressions
— Seed money/Seed of investment. The initial capital or idea.
これが将来の大きな利益を生む投資の種になる。
Neutral— An investment in oneself. Often used to justify expensive but useful purchases.
この高い靴は、自分への投資だ。
Informal— To 'spend' time as if it were capital for a future gain.
語学の習得に膨大な時間を投資した。
Neutral— To not spare any investment; to be willing to invest as much as needed.
子供の教育には投資を惜しまない。
Formal— An investment bears fruit; to see the successful results of an investment.
長年の投資がついに実を結んだ。
Literary— To allocate or divert funds/resources into investments.
ボーナスをすべて投資に回す。
Neutral— A professional investor or someone very skilled at investing.
彼は投資のプロとして知られている。
Neutral— To be in a hurry to invest, often leading to mistakes.
投資を焦ると失敗する可能性が高い。
Neutral— To use an initial investment as a 'pump-primer' to attract more.
公的資金を投資の呼び水にする。
Formal— Someone with a discerning eye for good investments.
彼は優れた投資の目利きだ。
FormalEasily Confused
Sounds exactly like 'tōshi' if the long vowel is ignored.
Toshi is 'year'. Tōshi is 'investment'. The long 'ō' is the key difference.
今年の投資計画。 (This year's investment plan.)
Homophone if the long vowel is ignored.
Toshi means 'city'. Tōshi means 'investment'.
大都市への投資。 (Investment in a large city.)
Exact homophone (same reading/length).
闘志 means 'fighting spirit'. Context usually makes it clear.
投資に闘志を燃やす。 (Burning with fighting spirit for investment.)
Similar sound (voiced 'd' instead of 't').
Doushi means 'comrade/like-minded person'.
投資の同志を見つける。 (Finding comrades in investment.)
Similar sound.
Doushi means 'verb' in grammar.
『投資する』は動詞です。 ('Invest' is a verb.)
Sentence Patterns
[Noun] に 投資する
勉強に投資する。
[Noun] は [Noun] への 投資だ
本は自分への投資だ。
[Resource] を [Target] に 投資する
時間を趣味に投資する。
将来のために [Noun] に 投資すべきだ
将来のために株に投資すべきだ。
[Noun] への 投資を 拡大する
研究開発への投資を拡大する。
[Abstract Noun] の 観点から 投資を 考察する
経済成長の観点から投資を考察する。
投資の リスクを 分散する
投資のリスクを分散するために、いろいろな株を買う。
投資による リターンを 期待する
投資による高いリターンを期待している。
Word Family
Nouns
Verbs
Adjectives
Related
How to Use It
Very high in news, business, and self-help contexts.
-
Using 'を' for the target (e.g., 株式を投資する)
→
株式に投資する
The target of investment must be marked with 'に'. 'を' marks the resource being invested (like money).
-
Pronouncing it as 'toshi' (short o)
→
tōshi (long o)
Short 'toshi' means 'year' or 'city'. The long vowel is essential for meaning.
-
Confusing 投資 with 投機 (Touki)
→
Use 投資 for long-term growth; 投機 for short-term speculation.
In professional settings, confusing these two makes you sound like you don't understand risk management.
-
Using 投資 for simple consumption (e.g., 昼ご飯を投資する)
→
昼ご飯を食べる / 昼ご飯にお金を使う
Investment implies a future return. Unless the lunch is a networking meeting, it's just consumption.
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Confusing 投資 with 貯金 (Savings)
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Use 貯金 for saving cash; 投資 for buying assets.
Japanese distinguish strictly between 'saving' (no risk) and 'investing' (risk/growth).
Tips
Use 'に' for Targets
Always remember the target of your investment takes 'に'. If you use 'を', it sounds like you are the one being invested in by the asset!
Self-Investment is Virtue
In Japan, saying you are 'investing in yourself' (自己投資) is a highly respected way to explain why you are spending money on classes or books.
Long-term vs Short-term
投資 implies a long-term vision. For quick, risky money moves, use '投機' (touki) instead to sound like a pro.
Learn the 'Ka' Suffix
By learning 投資家 (investor), you can learn other 'ka' words like 専門家 (expert) and 政治家 (politician).
Kanji Precision
Be careful with 資. It has a '貝' (shell) radical at the bottom, which historically represented money/wealth. This helps you remember it's about resources.
Pitch Accent
Start high on 'to' and drop for 'shi'. This distinguishes it from 'year' which usually starts low in some dialects.
Equipment Investment
When talking about business growth, '設備投資' (setsubi tōshi) is the most common term for buying machinery or software.
Time as Capital
Japanese speakers often talk about 'investing time' (時間を投資する) in their health or family, not just their job.
JLPT Context
This word often appears in JLPT N3 and N2 reading passages about the economy or social changes.
The Long 'O'
Don't rush the 'tō'. It's a double-length vowel. 'To-o-shi'. Practice saying it slowly to get the rhythm right.
Memorize It
Mnemonic
Think of a 'TOE' (投) that is 'SHE' (資) - Imagine a giant toe pushing a lady (she) who is carrying a bag of gold into a business. You are 'throwing' her resources in!
Visual Association
Visualize a person throwing a golden coin into a small pot, and a giant tree growing out of it instantly.
Word Web
Challenge
Try to use the phrase '自己投資' (jiko tōshi) in a sentence about your Japanese studies today.
Word Origin
The word 投資 was popularized during the Meiji era as Japan modernized its economic system and adopted Western financial concepts. It was used to translate the English word 'investment.'
Original meaning: The combination of 'to throw' (投) and 'resources' (資) literally means to cast assets into a project.
Sino-Japanese (Kango).Cultural Context
Be careful not to sound like a 'scammer' (詐欺師) when talking about investment opportunities, as investment fraud is a sensitive topic in Japan.
In English, 'investment' is often strictly financial, but in Japanese, 投資 is used even more broadly for effort and time.
Practice in Real Life
Real-World Contexts
Financial Planning
- 老後のための投資
- 投資のポートフォリオ
- 利回りの良い投資
- 投資の専門家
Education/Skills
- 自己投資を惜しまない
- 勉強への投資
- 将来への先行投資
- スキルのための投資
Business Strategy
- 新規事業への投資
- 設備投資の計画
- 投資回収期間
- 投資判断を下す
Government/Economy
- 公共投資の拡大
- 海外直接投資
- 投資環境の整備
- 投資の促進
Health/Wellness
- 健康への投資
- 予防医療への投資
- ジムへの投資
- 睡眠への投資
Conversation Starters
"最近、何か自己投資をしていますか？ (Are you doing any self-investment lately?)"
"投資と貯金、どちらが重要だと思いますか？ (Which do you think is more important, investment or savings?)"
"初めて投資をした時のことを覚えていますか？ (Do you remember when you made your first investment?)"
"もし100万円あったら、何に投資したいですか？ (If you had 1 million yen, what would you want to invest in?)"
"日本の投資環境についてどう思いますか？ (What do you think about the investment environment in Japan?)"
Journal Prompts
今日の自分の行動の中で、将来への『投資』と言えるものは何でしたか？ (Of your actions today, what could be called an 'investment' in the future?)
10年後の自分を想像して、今すべき投資について書いてください。 (Imagine yourself 10 years from now and write about the investments you should make now.)
お金以外で、あなたが大切にしている投資（時間、人間関係など）は何ですか？ (Besides money, what are the investments you value (time, relationships, etc.)?)
失敗した投資から学んだ教訓をまとめてください。 (Summarize the lessons you learned from a failed investment.)
理想的な資産運用の計画を日本語で書いてみましょう。 (Try writing your ideal asset management plan in Japanese.)
Frequently Asked Questions
10 questionsNo, while it's most common in finance, it's frequently used for time (時間を投資する), effort, and education (自己投資). Any resource used for future gain counts.
Use 'に' (ni) to mark the target of the investment. For example, '不動産に投資する' (invest in real estate).
It means 'self-investment.' It refers to spending money or time to improve your own skills, knowledge, or health for future benefit.
In Japanese culture, they are strictly separated. 投資 is seen as rational and constructive, while ギャンブル (gambling) is seen as luck-based and often negative.
The word is '投資家' (tōshika). The 'ka' suffix indicates a person with a specific profession or expertise.
投資 is the general act of investing. 出資 (shusshi) is specifically providing capital to a company, usually for business startup or equity.
It's possible but sounds a bit cold or calculating. It's better to use terms like '大切にする' (to value/cherish) for people.
Yes, NISA is a specific Japanese tax-free system designed to encourage individuals to engage in 投資 (stock/trust investment).
Common terms are '投資収益率' (ROI) or simply 'リターン' (return) or '利回り' (yield).
It means 'upfront investment' or 'prior investment,' referring to resources spent early on to ensure success later.
Test Yourself 192 questions
Write a sentence in Japanese about investing in your health.
Well written! Good try! Check the sample answer below.
Write a sentence about why self-investment is important.
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Explain the difference between 投資 and 貯金 in Japanese.
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Write a formal sentence about a company's investment in IT.
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Write a sentence using '分散投資'.
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Write a sentence about investing in the next generation.
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Write a sentence about recovering an investment.
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Write a sentence using '投資家'.
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Write a sentence about a government investment in energy.
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Write a sentence about a 'failed' investment.
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Write a sentence about 'human capital investment'.
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Write a sentence about 'long-term investment'.
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Write a sentence about 'overseas investment'.
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Write a sentence using '投資環境'.
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Write a sentence about 'investment return'.
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Write a sentence about 'upfront investment'.
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Write a sentence about 'refraining from investment'.
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Write a sentence about 'real estate investment'.
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Write a sentence about 'diversified investment' benefits.
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Write a sentence about 'investment decision'.
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Describe your most successful 'self-investment' in Japanese.
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Pronounce '投資' clearly, focusing on the long 'o'.
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Explain to a friend why they should invest in stocks, using '投資'.
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Give a short speech about 'Human Capital Investment' in a business setting.
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Debate: Is it better to save or to invest? Use '貯金' and '投資'.
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Roleplay: You are a financial advisor recommending 'Diversified Investment'.
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Explain 'NISA' to someone who doesn't know what it is.
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Talk about an investment you want to make in the future.
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Discuss the risks of investment using 'リスク' and '投資'.
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Explain the phrase '自分への投資' with an example.
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Describe the current 'investment boom' in Japan.
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Ask three questions to an investor using '投資'.
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Summarize a news report about 'Foreign Direct Investment'.
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Explain why 'Long-term investment' is popular.
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Describe 'Real Estate Investment' pros and cons.
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Talk about 'Educational Investment' from a parent's perspective.
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Explain the difference between 'Touki' and 'Toushi'.
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Give advice to a beginner investor.
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Discuss 'ESG Investment' and its importance.
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Talk about 'Time Investment' in learning Japanese.
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Listen to the sentence: '将来のために、今から投資を始めることが大切です。' What is important?
Listen: '彼は自己投資として、毎日三時間英語を勉強している。' How does he invest in himself?
Listen: '分散投資はリスクを減らすための基本です。' What is the basic rule mentioned?
Listen: '政府は新しいテクノロジーへの投資を支援しています。' Who is supporting investment in new technology?
Listen: '投資信託の利回りは、市場の状況によって変わります。' What changes based on market conditions?
Listen: '設備投資の拡大が、企業の成長を加速させた。' What accelerated the company's growth?
Listen: '人的資本への投資こそが、今の日本に必要だ。' What does the speaker think Japan needs?
Listen: '投資家たちは、中央銀行の発表を注視している。' What are investors watching closely?
Listen: 'この物件は投資には向いていません。' Is the property good for investment?
Listen: '短期的な投資よりも、長期的な視点が重要です。' What is more important than short-term investment?
Listen: '海外からの直接投資が増えています。' What is increasing?
Listen: '投資の失敗を恐れてはいけません。' What should you not fear?
Listen: '自己投資を怠ると、成長が止まってしまいます。' What happens if you neglect self-investment?
Listen: '投資回収期間は、約三年と見込んでいます。' How long is the expected investment recovery period?
Listen: '不確実な時代だからこそ、投資の知識が必要です。' Why is investment knowledge needed now?
/ 192 correct
Perfect score!
Summary
投資 (tōshi) is a versatile word meaning 'investment.' While it's foundational in business and finance, its most common daily use is in 'self-improvement' (自己投資). Always remember to use the particle 'に' for the target, as in: '将来に投資する' (Invest in the future).
- 投資 (tōshi) means 'investment.' It is used for financial assets like stocks, but also for time and effort in personal growth.
- It functions as a noun or a Suru-verb (投資する). The target of the investment is marked with the particle 'に' (ni).
- Key compound terms include 自己投資 (self-investment), 投資家 (investor), and 設備投資 (capital investment in equipment).
- Culturally, it has shifted from being seen as 'risky' to being a 'smart/necessary' part of life planning in modern Japan.
Use 'に' for Targets
Always remember the target of your investment takes 'に'. If you use 'を', it sounds like you are the one being invested in by the asset!
Self-Investment is Virtue
In Japan, saying you are 'investing in yourself' (自己投資) is a highly respected way to explain why you are spending money on classes or books.
Long-term vs Short-term
投資 implies a long-term vision. For quick, risky money moves, use '投機' (touki) instead to sound like a pro.
Learn the 'Ka' Suffix
By learning 投資家 (investor), you can learn other 'ka' words like 専門家 (expert) and 政治家 (politician).
Example
株に投資します。
Related Content
More Money words
会計
A1Refers to the process of accounting, managing finances, or settling a bill. In daily life, it is most commonly used when asking for the check at a restaurant or shop.
騰貴
A1A sharp or sudden increase in the price or value of something, such as goods, land, or stocks. It is primarily used in economic contexts to describe significant inflation or market spikes.
収支
A1The balance between income and expenditure; the total amount of money coming in versus money going out. It is used to describe the financial state of an individual, household, or organization.
残高
A1The amount of money remaining in a bank account or a prepaid card after transactions have been made. It specifically refers to the numerical balance or the 'sum total' left over in a financial record.
利息
A1Risoku refers to interest, which is the amount of money earned on savings or paid on a loan over time. It is typically calculated as a percentage of the principal amount.
金融
A1The circulation of money and credit within an economy, specifically referring to the systems of banking, investment, and lending. It describes how capital flows from those who have it to those who need it for business or personal use.
給付
A1Refers to the act of providing or delivering money, goods, or services, typically as a legal or contractual obligation. It is most frequently used in the context of government benefits, insurance payouts, or social welfare distributions.
手形
A1A word with two primary meanings: literally a 'handprint' often used for souvenirs or identification, and a financial 'promissory note' or 'bill of exchange' used in business transactions.
予算
A1A budget or an estimate of the amount of money available for a specific purpose. It refers to the financial plan or limit set before spending occurs in personal, business, or government contexts.
現金
A1Physical money in the form of paper notes and metal coins. It refers specifically to tangible currency as opposed to credit cards, digital payments, or checks.
