as in high-speed
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Recent Examples of ultrafast
Specifically, femtosecond lasers, which emit ultrafast light pulses.
—
Alex Knapp, Forbes.com, 20 Feb. 2026
Treutelaar also has the typical tools, including ultrafast hand-to-hand snap times and pinpoint accuracy.
—Steve Reaven, Chicago Tribune, 5 Feb. 2026
But homes also need ultrafast Wi-Fi for laptops and phones and streaming video.
—IEEE Spectrum, 25 Dec. 2025
Compare that to 37 miles per second for the swift Perseids, 41 for the very swift Orionids, and 45 for the ultrafast Leonids.
—Joe Rao, Space.com, 7 Dec. 2025
See All Example Sentences for ultrafast
Alex Knapp, Forbes.com, 20 Feb. 2026
Treutelaar also has the typical tools, including ultrafast hand-to-hand snap times and pinpoint accuracy.
—Steve Reaven, Chicago Tribune, 5 Feb. 2026
But homes also need ultrafast Wi-Fi for laptops and phones and streaming video.
—IEEE Spectrum, 25 Dec. 2025
Compare that to 37 miles per second for the swift Perseids, 41 for the very swift Orionids, and 45 for the ultrafast Leonids.
—Joe Rao, Space.com, 7 Dec. 2025
See All Example Sentences for ultrafast
Recent Examples of Synonyms for ultrafast
Adjective
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Can California get the high-speed rail project back on track?—
Jon Wertheim,
CBS News,
5 Apr. 2026
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Diridon Station is now a hub for VTA’s buses and light-rail trains, Caltrain and Amtrak — and one day it may be announced as a stop for BART and high-speed rail.—
Sal Pizarro,
Mercury News,
4 Apr. 2026
Adjective
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This season, the Jets are No. 22 in rush EPA defense, surrendering 4.24 yards per carry and 104.6 rush yards per game to running backs.—
Brad Evans,
New York Times,
13 Nov. 2025
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The Titans’ defense is 24th in rush EPA per play and 11th in rush success rate.—
Doug Kyed,
Boston Herald,
18 Oct. 2025
Cite this Entry
“Ultrafast.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultrafast. Accessed 7 Apr. 2026.
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