One of the mysteries of the English language finally explained.
The business of money-changing.
Early 18th century. From French agiotage from agioter to speculate (although this is first attested slightly later: 1716; from agio, with insertion of medial -t- by analogy with nouns ending in -ot; compare † agiot, variant of agio) + -age.
In this article we explore how to impress employers with a spot-on CV.