一いち躍やく

adverb, noun, noun or participle which takes 'suru'

suddenly; instantly; overnight

Describes a rapid, dramatic rise to fame, success, or prominence. Often used with verbs like 有名になる, 出世する, or トップに立つ.

• 彼かれはその映えい画がで一いち躍やく有ゆう名めいになった。

  He suddenly became famous with that movie.

• 新しん製せい品ひんが一いち躍やくトップシェアを獲かく得とくした。

  The new product instantly gained the top market share.

noun, noun or participle which takes 'suru'

one bound; one leap

Original literal meaning of a single jump or leap. Now rare and mostly found in classical or literary contexts; the modern sense is overwhelmingly the figurative 'sudden rise'.

• 古こ語ごでは「一いち躍やく」を文も字じ通どおりひと跳とびの意い味みで使つかった。

  In classical language, 一躍 was used literally to mean a single leap.