a whizz-kid

a young person who is very clever and successful They've taken on some financial whizz-kid who's going to sort all their problems out.

Name	Pronounced	Usage
Tamzen	-	English (Rare)
Joram	-	Biblical
Laurynas	-	Lithuanian
Eljas	EL-yahs	Finnish
Sergej	syer-GYAY (Russian), seer-GYAY (Russian)	Russian, Bulgarian
Erminigild	-	Ancient Germanic