Alert, vigorous, or pure
Kayci is a modern phonetic spelling of the Irish surname Casey, meaning alert or vigorous. It is also frequently used as a diminutive of Katherine, which carries the Greek meaning of pure. This specific spelling variation gained some traction in the late 20th century alongside similar names like Kaylee and Kacie.
About 17 girls were named Kayci in 2025.
American professional soccer player
US births per 5-year period, 1990–present (SSA data).
