superfast

adjective
su·​per·​fast | \ ˌsü-pər-ˈfast How to pronounce superfast (audio) \

Definition of superfast

: extremely fast superfast speeds superfast travel

First Known Use of superfast

1911, in the meaning defined above

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The first known use of superfast was in 1911

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Cite this Entry

“Superfast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/superfast. Accessed 8 Aug. 2020.

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