ultrafast

adjective

ul·​tra·​fast ˌəl-trə-ˈfast 

: extremely or extraordinarily fast

ultrafast trains

ultrafast speeds

an ultrafast wireless connection

Examples of ultrafast in a Sentence

Recent Examples on the Web

For the first time in over half a century, the United States government is clearing the way for a new generation of ultrafast aircraft to take to the skies. — Andrew Paul, Popular Science, 1 July 2026

The total number of these ultrafast unicorns has also quadrupled since 2023. — Beatrice Nolan, Fortune, 30 June 2026

In this work, an ultrafast laser was miniaturized using photonic chips to route light through microscopic waveguides rather than bulky laboratory equipment. — Mrigakshi Dixit, Interesting Engineering, 3 June 2026

The company is preparing to file for US approval soon, and the FDA has promised to give the drug an ultrafast review. — Bloomberg, Oc Register, 29 May 2026

Word History

First Known Use

1883, in the meaning defined above

Rhymes for ultrafast

• chloroplast
• epiblast
• fibroblast
• opencast
• overcast
• protoplast
• rebroadcast
• telecast
• trophoblast
• unsurpassed
• aghast
• amassed