迅速

じんそく · jinsoku · JLPT N1 · na-adj

quick; fast; prompt

⚡ 迅 (swift) + 速 (speed) = swift speed; the jin in jinsoku echoes swift, the soku echoes speed

迅 means swift and appears in 迅雷, a lightning strike. Paired with 速, speed, it names something done rapidly and without delay.

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