We don't have synonyms for quiz kid yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are whiz kid and quiz kids.
(n) :
A very intelligent or accomplished child or young person, especially one who demonstrated his or her knowledge and quick thinking on radio or television programs in the mid-20th century.
(n) :
Alternative form of quiz kid. [A very intelligent or accomplished child or young person, especially one who demonstrated his or her knowledge and quick thinking on radio or television programs in the mid-20th century.]
(n) :
A very intelligent or accomplished child or young person, especially one who demonstrated his or her knowledge and quick thinking on radio or television programs in the mid-20th century.
(n) :
Alternative form of quiz kid. [A very intelligent or accomplished child or young person, especially one who demonstrated his or her knowledge and quick thinking on radio or television programs in the mid-20th century.]