In 15 Seconds
- Improving a physical object, machine, or technical system.
- Used for products, recipes, software, and DIY projects.
- Focuses on making things more functional or efficient.
Meaning
It means taking a physical object, a machine, or a specific system and making it better or more efficient than it was before.
Key Examples
3 of 6Talking about a cooking experiment
このカレーのレシピ、改良をしてさらに美味しくなったよ。
I improved this curry recipe, and now it tastes even better.
A business meeting about a product
お客様のフィードバックをもとに、製品の改良をしました。
We improved the product based on customer feedback.
Texting a friend about a game update
最新のアップデートで、操作性がかなり改良されたね！
The latest update really improved the playability!
Cultural Background
The concept of '改良' is deeply tied to the Japanese manufacturing philosophy of 'Kaizen,' though '改良' specifically targets the physical or technical aspects. It became a buzzword during Japan's high-growth period when companies obsessed over refining Western technology to create superior products. Today, it reflects a general cultural value of 'never being finished' with a design.
The 'Thing' Rule
Always remember that `改良` is for things you can touch or systems you can map out. If you can't drop it on your foot or see it on a screen, you probably need a different word.
Don't 'Improve' People
Avoid using `改良` for people's personalities or skills. It makes them sound like robots. Use `向上` (koujou) for skills or `改善` (kaizen) for habits.
In 15 Seconds
- Improving a physical object, machine, or technical system.
- Used for products, recipes, software, and DIY projects.
- Focuses on making things more functional or efficient.
What It Means
改良をする is all about the 'upgrade' vibe. Imagine you have a vacuum cleaner that’s okay, but you add a better filter. That is 改良. It focuses on making tangible things or technical processes more functional. It’s not just fixing a bug; it’s making the whole system smoother. Think of it as 'version 2.0' of an object.
How To Use It
You use this phrase by putting the object you are improving first. Then add を改良する or 改良をする. It’s a very versatile 'noun + suru' verb. You can use it for recipes, software, or even a DIY shelf. It sounds proactive and smart. It shows you aren't just satisfied with 'good enough.'
When To Use It
Use it when you’re talking about your hobbies. Maybe you tweaked your coffee brewing method. Use it at work when discussing product development. It’s perfect for technical meetings or progress reports. Even texting a friend about a new game update works. It fits anywhere you talk about 'making things better.'
When NOT To Use It
Don't use this for people's personalities. Saying you want to 改良 your boyfriend sounds like you're trying to install a new OS in him. That's a bit creepy! For abstract things like 'society' or 'habits,' use 改善 (kaizen) instead. Also, don't use it for simple repairs. If something is broken, just use 修理 (shuuri).
Cultural Background
Japan is famous for 'monozukuri' or the art of making things. 改良 is the heart of this culture. It’s the reason Japanese cars and electronics became world-famous. There is a deep cultural pride in constant, tiny upgrades. It’s not about reinventing the wheel. It’s about making the wheel spin 5% faster every year.
Common Variations
You will often hear 改良を重ねる (kairyou o kasaneru). This means to 'pile up improvements' over time. It suggests a lot of hard work and many versions. Another one is 改良版 (kairyou-ban), which means the 'improved version' or 'new model.' It’s a common tag on store shelves or app stores.
Usage Notes
This phrase is neutral and very safe to use in almost any setting. Just remember the 'tangible object' rule to avoid sounding like you're talking to a cyborg.
The 'Thing' Rule
Always remember that `改良` is for things you can touch or systems you can map out. If you can't drop it on your foot or see it on a screen, you probably need a different word.
Don't 'Improve' People
Avoid using `改良` for people's personalities or skills. It makes them sound like robots. Use `向上` (koujou) for skills or `改善` (kaizen) for habits.
The Kaizen Connection
While the world knows 'Kaizen,' Japanese people use `改良` specifically when they've actually changed the hardware or the code. It's the tangible proof of progress.
Examples
6このカレーのレシピ、改良をしてさらに美味しくなったよ。
I improved this curry recipe, and now it tastes even better.
Recipes are a very common context for this phrase.
お客様のフィードバックをもとに、製品の改良をしました。
We improved the product based on customer feedback.
Standard professional usage for product development.
最新のアップデートで、操作性がかなり改良されたね！
The latest update really improved the playability!
Used for software or user interface improvements.
うちの猫、エサをもらうための作戦を常に改良しているみたい。
It seems my cat is constantly improving its strategy to get food.
Applying a technical term to a cat's 'strategy' adds a funny touch.
祖父が一生をかけて改良を続けたこの機械を、大切に使いたい。
I want to treasure this machine that my grandfather spent his life improving.
Shows the dedication and history behind a physical object.
もっと使いやすくするために、棚の形を改良をすることにした。
I decided to improve the shape of the shelf to make it easier to use.
Perfect for physical modifications and upgrades.
Test Yourself
Choose the correct word to complete the sentence about a new app feature.
ユーザーの意見を聞いて、アプリの機能を___しました。
`改良` is used for improving functions or systems. `修理` means repair, and `休憩` means break.
Which particle is most natural here?
エンジン___改良をして、燃費を良くした。
The object being improved is marked with the particle `を`.
🎉 Score: /2
Visual Learning Aids
Formality of '改良をする'
Talking to friends about a hobby or a game.
レシピを改良した！
General daily conversation or blogs.
道具を改良をする。
Business reports or technical manuals.
製品の改良を実施いたしました。
Where to use '改良をする'
Professional
Product R&D
Kitchen
Tweaking a recipe
Tech
Software updates
Workshop
DIY tool mods
Practice Bank
2 exercisesユーザーの意見を聞いて、アプリの機能を___しました。
`改良` is used for improving functions or systems. `修理` means repair, and `休憩` means break.
エンジン___改良をして、燃費を良くした。
The object being improved is marked with the particle `を`.
🎉 Score: /2
Frequently Asked Questions
11 questions改良 (kairyou) is for physical objects or technical systems. 改善 (kaizen) is for abstract things like situations, habits, or problems. You 改良 a car, but you 改善 your lifestyle.
Not really. For skills, 向上させる (koujou saseru) or 上達する (joutatsu suru) are much more natural. 改良 would make your brain sound like a machine.
Yes! If you talk about how you 改良 a workflow or a tool at your previous job, it sounds very professional and impressive.
It means to improve something over and over again. It’s a common phrase used to show that a lot of effort went into the final product, like 改良を重ねて完成したスープ (soup perfected through many improvements).
For a house, people usually use リフォームする (reform) or 改築する (kaichiku). 改良 might be used for a specific part, like キッチンの排水システムを改良した (improved the kitchen drainage system).
It is neutral. You can use it with friends (casual) or in a report (formal). To make it more formal, you can say 改良を行う (kairyou o okonau).
No, if it's broken, use 修理する (shuuri suru). 改良 is for when the phone works but you want to make it even better.
It means an 'improved version.' You'll see this in app descriptions or on product packaging to show it's better than the previous model.
Not really a slang version, but in tech circles, people might just use 'update' (アップデート) or 'version up' (バージョンアップ).
Yes, you can 改良 a plan or a method if you are making the steps more efficient or logical.
If you mean a thing, say 〜を改良したい. If you mean yourself, say 自分を磨きたい (jibun o migakitai - I want to polish myself).
Related Phrases
改善する
To improve a situation or habit (Kaizen).
向上する
To improve or elevate a skill or level.
修正する
To correct or fix a mistake/error.
強化する
To strengthen or reinforce something.
