降ふって湧わく

expression, godan verb (-ku)

happen suddenly; appear out of the blue

Describes an event, idea, or situation that arises completely unexpectedly, as if falling from the sky. Often used with nouns like 話, 問題, or チャンス.

• そんなうまい話はなしが降ふって湧わくわけがない。

  There's no way such a sweet deal would just fall into our laps.

• 降ふって湧わいたようなチャンスを逃のがすな。

  Don't miss a chance that came out of nowhere.