JMdict: 2756980

瞬速 【しゅんそく】

  1. [n,adj-no] blindingly quick speed; (in) a flash; (in) the blink of an eye
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
Wink, Blink, Twinkle シュン またた.く, まじろ.ぐ
Quick, Fast ソク はや.い, はや-, はや.める, すみ.やか 3