a bright spark

(British & Australian)

an intelligent person

Usage notes: This phrase is often used humorously to mean the opposite.

Some bright spark was clearing up and threw my invitation away.

Name	Pronounced	Usage
Grimm	[grim]
Medusa	mə-DOO-sə (English)	Greek Mythology (Latinized)
Yijun	-	Chinese
Sakura	sah-koo-ṙah	Japanese
Russ	RUS	English
Tyrone	tie-RON	English