rapidity

noun

ra·​pid·​i·​ty rə-ˈpi-də-tē How to pronounce rapidity (audio)
ra-
Synonyms of rapiditynext
: the quality or state of being rapid

Examples of rapidity in a Sentence

the rapidity with which she can do mental math calculations is amazing
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.
My line supply decreases with distressing rapidity. Ralph Tuttle, Outdoor Life, 25 June 2026 Matthew Arnold, in the 19th century, famously said the qualities of Homer are the plainness, the rapidity, and the nobility. Jason P. Frank, Vulture, 23 June 2026 The two women’s powerful, mysterious bond is sketched in sharp yet subtle dramatic strokes that are all the more thrilling for their breathless rapidity. Richard Brody, New Yorker, 3 Apr. 2026 The rapidity of these updates, and often the ensuing reverse ferret, has earned a nickname: TACO (Trump Always Chickens Out). Eleanor Pringle, Fortune, 24 Mar. 2026 See All Example Sentences for rapidity

Word History

Etymology

borrowed from French & Latin; French rapidité, going back to Middle French, borrowed from Latin rapiditāt-, rapiditās, from rapidus "flowing violently, rapid entry 1" + -itāt-, -itās -ity

First Known Use

1654, in the meaning defined above

Time Traveler
The first known use of rapidity was in 1654

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Cite this Entry

“Rapidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rapidity. Accessed 2 Jul. 2026.

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