speed demon

noun

Definition of speed demon

chiefly US, informal
: someone or something that moves or works very fast The new cook is a regular speed demon. This computer is a real speed demon compared with/to my old computer.

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Cite this Entry

“Speed demon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/speed%20demon. Accessed 15 Jul. 2020.

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