whiz kid(redirected from a whiz-kid)
A person, usually a child or young adult, who is exceptionally skilled or intelligent. He was developing software by the time he was 10 years old—he's a total computer whiz kid. Those whiz kids at the spelling bee are always so impressive to watch. Sarah's the new whiz kid in accounting. She'll help you tackle the budget in no time.
n. a young whiz. The boss’s new whiz kid doesn’t seem to be doing the job very well.