Translation guide
The English word "diminution" refers to the act or process of becoming smaller, less, or less important. In Japanese, there is no single direct equivalent; instead, various words and patterns express reduction, decrease, or decline depending on what is diminishing and the context.
Expressing that something becomes smaller, fewer, or less intense in a general sense.
A common noun/verb meaning decrease or reduction in number, amount, or quantity. Often used in formal or written contexts.
人口の減少が続いている。
The population decline continues.
売上が大幅に減少した。
Sales decreased significantly.
Reduction in scale, size, or scope. Often used for business operations, images, or physical dimensions.
事業の縮小を検討している。
We are considering downsizing the business.
画像を縮小して保存する。
Reduce the image size and save it.
Decline or drop in quality, level, or standard. Commonly used for performance, morale, or economic indicators.
品質の低下が問題になっている。
The decline in quality is becoming a problem.
モチベーションの低下を感じる。
I feel a drop in motivation.
Decline or waning, often used for abstract things like interest, appetite, or energy. Slightly formal.
食欲が減退している。
My appetite is declining.
Decline or decay, often used for civilizations, industries, or power. Implies a long-term downward trend.
その産業は衰退の一途をたどっている。
That industry is on a steady decline.
Expressing the act of causing something to become smaller, fewer, or less.
Cutting down or reduction, especially of budgets, costs, or numbers. Implies intentional effort.
経費を削減しなければならない。
We must cut expenses.
人員削減が発表された。
Staff reductions were announced.
The most common verb for reducing something. Casual and versatile.
Literally 'to make small'. Used for physical size or volume.
音量を小さくしてください。
Please turn down the volume.
Expressing that something becomes less important, valuable, or respected.
Also used for decline in status or value, as noted above.
ブランド価値の低下が懸念される。
There are concerns about the diminution of brand value.
Fall or drop, especially for prices, stock values, or rankings.
Erosion or shrinkage of value, often due to inflation or depreciation. Somewhat colloquial.
Expressing a slow, often natural, diminution over time.
To fade, dim, or become weaker. Used for memories, feelings, light, or colors.
To decline in strength, vitality, or power. Often used for physical ability or influence.
Attenuation or damping, often used in technical contexts like physics or engineering.
The English word "diminution" is formal and relatively rare. In most everyday situations, Japanese speakers use more specific verbs like 減る (heru), 減らす (herasu), or 小さくなる (chiisaku naru). Using a direct translation like 減少 in casual speech may sound overly stiff.
減少 (genshō) is often an intransitive decrease (something decreases), while 削減 (sakugen) is a transitive, deliberate reduction (someone cuts something). However, 減少 can also be used transitively in some contexts.
You should reduce your salt intake.
無駄を減らす努力をしている。
We are making efforts to reduce waste.
The stock price decline won't stop.
Savings diminish due to inflation.
体力が衰えてきた。
My physical strength has diminished.
信号が減衰する。
The signal attenuates.