whiz kid

noun, Informal.
1.
a youthful and exceptionally intelligent, successful, or influential person in a given field:
the whiz kid of network programming.
Origin
1940-45

whiz-kid

[hwiz-kid, wiz-] /ˈʰwɪzˌkɪd, ˈwɪz-/
adjective
1.
of, pertaining to, or being a whiz kid:
a whiz-kid sales manager.
Origin
1940-45
British Dictionary definitions for whiz kid

whizz kid

noun
1.
(informal) a person who is outstandingly successful for his or her age
Word Origin
C20: from whizz, perhaps influenced by wizard
Slang definitions & phrases for whiz kid

whiz kid

modifier

: Then the whiz-kid lawyers collided with a tougher adversary

noun phrase

A very clever young person; a youthful prodigy: the physics whiz kid (1930s+)

[fr whiz1 blended with quiz kid, ''very bright child or young person,'' used of participants in a 1930s radio quiz program]