ultrafast

adjective

ul·​tra·​fast ˌəl-trə-ˈfast How to pronounce ultrafast (audio)
Synonyms of ultrafastnext
: extremely or extraordinarily fast
ultrafast trains
ultrafast speeds
an ultrafast wireless connection

Examples of ultrafast in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Users can also check ultrafast delivery options on Amazon’s getitfast site. Annie Palmer, CNBC, 17 Mar. 2026 Cho believes that EyeDAR's combination of compact, low-cost, non-complex architecture with ultrafast analog processing makes widespread deployment across roads and highways feasible. Etiido Uko march 14, New Atlas, 14 Mar. 2026 Considering the extreme energy and ultrafast tempo the music requires, hardcore shows can be exhausting for all involved — and transformative. Christopher Arnott, Hartford Courant, 7 Mar. 2026 Treutelaar also has the typical tools, including ultrafast hand-to-hand snap times and pinpoint accuracy. Steve Reaven, Chicago Tribune, 5 Feb. 2026 See All Example Sentences for ultrafast

Word History

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of ultrafast was in 1883

Browse Nearby Words

Cite this Entry

“Ultrafast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrafast. Accessed 21 Mar. 2026.

More from Merriam-Webster on ultrafast

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster