急 速(きゅうそく)

きゅうそく

na-adjective, noun

rapid, swift

1. rapid, swift, quick

Happening or progressing at a fast rate.

技術(ぎじゅつ)が急速(きゅうそく)に発展(はってん)している。

Technology is developing rapidly.

急速(きゅうそく)な経済(けいざい)成長(せいちょう)を遂(と)げた。

We achieved rapid economic growth.

高齢化(こうれいか)が急速(きゅうそく)に進(すす)んでいる。

The aging of the population is progressing rapidly.

急速(きゅうそく) is a na-adjective emphasizing the speed at which change or progress occurs. Often used for large-scale phenomena.

Forms

急速(きゅうそく)な: rapid (attributive)
急速(きゅうそく)に: rapidly (adverbial)

Common patterns

急速(きゅうそく)な発展(はってん): rapid development
急速(きゅうそく)に進(すす)む: to progress rapidly
急速(きゅうそく)に広(ひろ)がる: to spread rapidly
急速(きゅうそく)な変化(へんか): rapid change

Similar words

急激(きゅうげき): drastic (emphasizes intensity and suddenness)
高速(こうそく): high-speed (for physical speed)
迅速(じんそく): swift, prompt (for taking action quickly)
急速(きゅうそく) focuses on the pace of change over time

Related Words

Related: 急激(きゅうげき) (drastic)

Compare: 高速(こうそく) (high-speed)

Compare: 迅速(じんそく) (swift, prompt)

Compare: 飛躍的(ひやくてき) (dramatic)

general

Added 2026.1.11 15:43 · Revised 2026.9.4 21:29

02500/02634_kyuusoku