Whiz

google

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mid 16th century: imitative.

wiktionary

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Onomatopoeic. Compare  huzz,  hizz,  hiss. 

See with.

etymonline

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whiz (n.)

"clever person," 1914, probably a special use of whiz "something remarkable" (1908), an extended sense of whizz; or perhaps a shortened and altered form of wizard. Noun phrase whiz kid is from 1930s, a take-off on a radio show's quiz kid.