加か速そくかそくCommon wordJLPTN2Freq.FrequencyTop 10,000ConjugationMeanings1noun, noun or participle which takes 'suru', transitive verb, intransitive verbacceleration; speeding upUsed for physical acceleration (vehicles, objects) and abstract quickening (processes, trends). Can be used as a noun or with する as a transitive/intransitive verb.Antonyms: 減速車くるまが急きゅうに加か速そくした。The car suddenly accelerated.