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電光石火 (denkousekka) Japanese meaning: lightning speed | Kotomora
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彼かれ
は
電でん
光こう
石せっ
火か
の
速はや
さ
で
問もん
題だい
を
解かい
決けつ
し
た
。
He solved the problem with lightning speed.
Related words 一いっ 瞬しゅん 一瞬 means 'a moment' or 'an instant,' focusing on the brevity of time, while 電光石火 emphasizes the speed of an action or occurrence.
迅じん 速そく 迅速 is a more common word for 'quick' or 'rapid,' used in everyday and formal contexts, whereas 電光石火 is a vivid, idiomatic expression.
Etymology A yojijukugo combining 電光 (lightning) and 石火 (spark from a flint), both metaphors for extreme speed. The exact historical origin is uncertain, but it is a well-established idiom in Japanese.
