whiz kid

Slang an exceptionally talented and comparatively young person, esp. a newcomer, who shows great promise in a particular field

See whiz kid in American Heritage Dictionary 4

noun
Informal

A young person who is exceptionally intelligent, innovatively clever, or precociously successful.

Origin:

Origin: Alteration of Quiz Kid, a panelist on an early game show

link/cite print suggestion box

More from YD