加速|かそくkasoku[0]heiban (flat)
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- noun, suru verb, transitive verb, intransitive verbacceleration; speeding up
Conjugation
| Dictionary form | 加速する(かそくする) |
|---|---|
| Polite (masu) | 加速します(かそくします) |
| Negative (nai) | 加速しない(かそくしない) |
| polite (masen) | 加速しません(かそくしません) |
| classical zu / nu | 加速せず・加速せぬ(かそくせず・かそくせぬ) |
| Past (ta) | 加速した(かそくした) |
| polite (mashita) | 加速しました(かそくしました) |
| Past negative (nakatta) | 加速しなかった(かそくしなかった) |
| polite (masen deshita) | 加速しませんでした(かそくしませんでした) |
| Te form | 加速して(かそくして) |
| Potential | 加速できる(かそくできる) |
| Passive | 加速される(かそくされる) |
| Causative | 加速させる(かそくさせる) |
| Causative passive | 加速させられる(かそくさせられる) |
| Conditional (ba) | 加速すれば(かそくすれば) |
| tara | 加速したら(かそくしたら) |
| Volitional | 加速しよう(かそくしよう) |
| polite (mashou) | 加速しましょう(かそくしましょう) |
| Imperative | 加速しろ(かそくしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- SynonymスピードアップNeutralLoanword for speeding up; common in speech and everyday business. 「加速」 is more formal and also appears in technical contexts like physics and economics.
- Related亢進こうしんWrittenWritten word for a degree steadily rising — used of medical conditions and bodily functions, also mounting tension or excitement; 「加速」 is only about speed increasing.
- Related促進そくしんWrittenWritten word for pushing something forward, as in 「販売促進」; the emphasis is on bringing things about, while 「加速」 stresses speed or a process getting faster.
- Antonym減速げんそくNeutralThe direct opposite of 「加速」: speed going down. Often used of vehicles, also of economic growth slowing.
- Antonym減速するNeutralVerb form meaning to reduce speed; the counterpart of 「加速する」, used of vehicles, the economy, and so on.
Use 「加速」 for speed or a process getting faster; in casual speech 「スピードアップ」 also works. Use 「促進」 for pushing a project or activity forward, and 「減速」 when speed goes down.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


