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
Lothar	LO-tahr (German)	German, Ancient Germanic
GÉRaldine	-	French
Nathalie	['næθəli]
Reyes	-	Spanish
Garry	GER-ee, GAR-ee	English
Taliesin	tal-ee-ES-in (Welsh)	Welsh, Arthurian Romance