名案が浮かんだ

a great idea came to mind

→ 名案
phrase Rare #41,736
a great idea came to mind Used when someone suddenly thinks of a good idea. The subject is often left unstated.
JA: 散歩していたら、名案が浮かんだ。
EN: A great idea came to mind while I was out for a walk.

その時、名案が浮かんだ。

That’s when I came up with a brilliant idea.

名案が浮かんだ。

I've come up with a great idea.

名案が浮かんだんだよ。

I've come up with a brilliant idea.