一定
一定する · noun or participle which takes 'suru'
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 一定する | 一定しない |
| Polite | 一定します | 一定しません |
| Past polite | 一定しました | 一定しませんでした |
| Past | 一定した | 一定しなかった |
| Te-form | 一定して | 一定しないで |
| Desire | 一定したい | 一定したくない |
| Potential | 一定できる | 一定できない |
| Passive | 一定される | 一定されない |
| Causative | 一定させる | 一定させない |
| Causative passive | 一定させられる | 一定させられない |
| Volitional | 一定しよう | |
| Polite volitional | 一定しましょう | |
| Imperative | 一定しろ | 一定するな |
| Conditional | 一定すれば | 一定しなければ |
| Tara conditional | 一定したら | 一定しなかったら |
Meanings
noun or participle which takes 'suru', transitive verb, intransitive verb
fix; settle; standardize; regularize
Transitive or intransitive use with する: to set something to a fixed standard, or for something to become fixed/uniform. Often used in formal, business, or technical contexts.
We need to fix the meeting schedule.
In this region, the temperature remains constant throughout the year.
noun which may take the genitive case particle 'no'
constant; fixed; uniform; prescribed
Attributive use with の: describes something that is set, unchanging, or standardized. Common in phrases like 一定の条件, 一定の期間, 一定の基準.
Anyone can apply if they meet the prescribed conditions.
This medicine has been recognized to have a definite effect.
Usage patterns
- 〈物〉を一定に保つto keep something constant/steady
We keep the room temperature constant.
- 一定の条件a certain/fixed set of conditions
If you meet certain conditions, a refund is possible.
- 一定の期間a fixed/set period of time
You can try it for free for a set period of time.
- 〈物〉が一定するfor something to become constant/stable
It's hard for the temperature to stay constant.
- 一定の基準a fixed/set standard
The company has established a fixed standard.