rapidity

noun

ra·​pid·​i·​ty rə-ˈpi-də-tē 

ra-

: the quality or state of being rapid

Synonyms of rapidity

• velocity
• speed

Examples of rapidity in a Sentence

the rapidity with which she can do mental math calculations is amazing

Recent Examples on the Web

But this doesn’t explain the rapidity of the shift nor the fact that all the leading American AI research labs moved in the same direction. —Nick Srnicek, Wired News, 14 Jan. 2026

Still others warned of the rapidity with which democracy could give way to dictatorship. —Talya Zax, The Atlantic, 23 Dec. 2025

The film captures the rapidity of time, with flashes of beauty and brutality whipping by in turn. —Anastasia Sanger, Glamour, 22 Dec. 2025

The first is the rapidity of innovation. —Ravi Kumar S, MSNBC Newsweek, 2 Dec. 2025

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

Rhymes for rapidity

• acidity
• aridity
• avidity
• cupidity
• fluidity
• humidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rigidity