The Collaborative International Dictionary
Pernicity
Pernicity \Per*nic"i*ty\, n. [L. pernicitas. See 1st
Pernicious.]
Swiftness; celerity. [R.]
--Ray.
Wiktionary
pernicity
n. (context archaic English) swiftness; celerity
Usage examples of "pernicity".
For the ship with an irrevocable pernicity and swiftnesse was carried away.