Rapidity and Speediness

Rapidity

Rapidity noun - A high rate of movement or performance.
Usage example: the rapidity with which she can do mental math calculations is amazing

Speediness is a synonym for rapidity in quickness topic. In some cases you can use "Speediness" instead a noun "Rapidity", when it comes to topics like fast, speed, swiftness. popular alternative

Nearby Words: rapid, rapidly

Speediness

Speediness noun - A high rate of movement or performance.
Usage example: the speediness with which she types is simply amazing

Rapidity is a synonym for speediness in fast topic. You can use "Rapidity" instead a noun "Speediness", if it concerns topics such as quickness, haste, swiftness. popular alternative
Cite this Source
Speediness and Rapidity. (2016). Retrieved 2026, August 18, from https://thesaurus.plus/related/rapidity/speediness
Rapidity & Speediness. N.p., 2016. Web. 18 Aug. 2026. <https://thesaurus.plus/related/rapidity/speediness>.
Speediness or Rapidity. 2016. Accessed August 18, 2026. https://thesaurus.plus/related/rapidity/speediness.
Google Ngram Viewer shows how "rapidity" and "speediness" have occurred on timeline