One of the mysteries of the English language finally explained.
Mid 17th century; earliest use found in Thomas Blount (1618–1679), antiquary and lexicographer. Either from post-classical Latin laboriositas, or independently from classical Latin labōriōsus + -ity. Compare French laboriosité, Spanish laboriosidad, Italian laboriosità.
In this article we explore how to impress employers with a spot-on CV.