Katey is a diminutive form of the name Kate, which itself is a short form of Katherine. The name Katherine has Greek origins, derived from the name Aikaterine, which may be related to the Greek word 'katharos,' meaning 'pure.' Katey, as a variant spelling of Katie and Katy, carries the same connotations of purity and simplicity. It is a popular given name in English-speaking countries and is often chosen for its classic and timeless appeal.