加速|かそくkasoku[0]heiban (flat)

JLPT N2approx.Common
Definitions
  1. noun, suru verb, transitive verb, intransitive verbacceleration; speeding up
    その政策せいさくは、インフレを加速かそくさせるだけだ。↗
    The policy will only accelerate inflation.
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.

Synonyms & antonyms
  • 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

Japanese definitions
  1. 速度そくどを速はやめること。
Kanji in this word
English equivalents
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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