RAPIDNESS Synonyms: 45 Similar and Opposite Words

rapidness

noun

Definition of rapidness

as in velocity

a high rate of movement or performance the rapidness of the response to a call for assistance is critical in saving the victim of a heart attack

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Recent Examples of Synonyms for rapidness

Noun

The rocket’s second stage ignited a single Aquila engine and accelerated to orbital velocity—some 5 miles per second—about seven minutes into the flight.

— Stephen Clark, ArsTechnica, 6 Sep. 2026
The right-hander, who came to the Mets from the Milwaukee Brewers in the trade for Freddy Peralta, was the long man out of the bullpen at the start of the year and pitched well until his velocity started to decline.

— Abbey Mastracco, New York Daily News, 6 Sep. 2026

Definition of velocity

Noun

Nearly everyone rides a stationary bike — high tension, low speed — after a match and quickly downs a protein recovery drink.

— Matthew Futterman, New York Times, 6 Sep. 2026
The storm, now moving west-northwest at just 5 mph, is forecast to turn northward to north-northeastward with an increase in forward speed Sunday and Monday, the National Hurricane Center said in its latest update.

— Doyle Rice, USA Today, 5 Sep. 2026

Definition of speed

Noun

Western officials and analysts say the Russian rate of advance has slowed significantly this year.

— Arkansas Online, Arkansas Online, 12 Sep. 2026
This advancement addresses a significant challenge in hydrogen fuel cells, specifically the rate at which protons traverse the catalyst layer responsible for electricity generation.

— Sujita Sinha, Interesting Engineering, 11 Sep. 2026

Definition of rate

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Browse Nearby Words

rapidly

rapidness

rapid(s)

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“Rapidness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/rapidness. Accessed 14 Sep. 2026.

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Synonyms of rapidness

noun

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