rapidity

[ ruh-pid-i-tee ]

/ rəˈpɪd ɪ ti /

a rapid state or quality; quickness; celerity.

Words nearby rapidity

Also rap·id·ness

[rap-id-nis] /ˈræp ɪd nɪs/.

From the Latin word rapiditās, dating back to 1610–20. See rapid, -ity

I just kind of knew it based on the rapidity of the infections.
Etta James, Who Blazed Trail for Women in R&B, Dead at 73|Christine Pelisek|January 21, 2012|DAILY BEAST
In my eyes, one of the greatest miracles it has ever worked is the rapidity of its propagation and the confidence it inspires.
The Miraculous Medal|Jean Marie Aladel
The rapidity of their advance was so great that the other regiments of the central column were left far behind.
British Regiments at the Front, The Story of Their Battle Honours|Reginald Hodder
The fullness of George Eliot's mind at this time may be gathered from the rapidity with which one work followed another.
The English Novel|Sidney Lanier

Taken as he was by surprise, Edward showed at once the vigour and rapidity of his temper.
History of the English People, Volume II (of 8)|John Richard Green
The most marked improvement was the rapidity which the daily funerals in the three burying grounds decreased.
The Red Cross in Peace and War|Clara Barton