Translation guide
The English word "reformation" generally refers to the act or process of changing and improving something, especially an institution or practice. In Japanese, the most common equivalent is 改革 (kaikaku), but other words like 改善 (kaizen) and 矯正 (kyōsei) are used depending on the nuance. This guide helps you choose the right Japanese expression based on what is being reformed and the nature of the change.
To express a large-scale, fundamental change to a system, organization, or law, often with a connotation of progress or improvement.
The standard term for reform of systems, institutions, or policies. It implies a deliberate, often top-down change for the better. Commonly used in politics, business, and social contexts.
政府は税制改革を進めている。
The government is promoting tax reform.
教育改革は急務だ。
Educational reform is an urgent task.
Refers to innovation or revolutionary reform, often implying a break from tradition. Used for technological, social, or political renewal.
技術革新が産業を変えた。
Technological innovation transformed the industry.
Emphasizes a major change or transformation, often with a sense of upheaval. Used for social or historical shifts.
社会変革の時代が来た。
The era of social transformation has come.
To express the idea of making something better through small, ongoing changes, often in processes, quality, or personal habits.
The go-to word for improvement or betterment, especially in business, manufacturing, or personal development. It implies a continuous, step-by-step process rather than a one-time overhaul.
業務プロセスの改善に取り組んでいます。
We are working on improving our business processes.
生活習慣を改善したい。
I want to improve my lifestyle habits.
Specifically refers to making improvements to a product, machine, or method, often through design changes or upgrades.
To express the idea of correcting wrong behavior, reforming a person's character, or rectifying a flaw.
Means correction or reform of a person's behavior, habits, or physical condition. Often used in contexts like criminal rehabilitation, correcting posture, or fixing teeth.
彼は犯罪者の矯正に尽力した。
He devoted himself to the rehabilitation of criminals.
歯列矯正を始めた。
I started orthodontic treatment.
Refers to a change of heart or moral reformation, often with a religious or ethical connotation. It implies a sincere internal change.
Means rehabilitation or rebirth, often used for ex-convicts or people recovering from a bad lifestyle. It emphasizes returning to society as a reformed person.
To refer specifically to the 16th-century religious movement led by Martin Luther and others.
The standard term for the Protestant Reformation. It literally means 'religious reform'.
宗教改革はヨーロッパの歴史に大きな影響を与えた。
The Reformation had a major impact on European history.
改革 (kaikaku) implies a fundamental, often structural change, while 改善 (kaizen) refers to incremental improvement. Use 改革 for overhauls of systems or policies, and 改善 for making existing processes better.
While 改革 can be used metaphorically for personal transformation (e.g., 自己改革), it sounds overly grand for everyday self-improvement. Use 改善 or other words like 向上 (こうじょう) instead.
スキルを向上させる
improve one's skills
このソフトウェアは絶えず改良されている。
This software is constantly being improved.
彼は改心して真人間になった。
He had a change of heart and became an honest person.
彼の更生を支援するプログラムがある。
There is a program to support his rehabilitation.