Pure or curly-haired
Kassadie is a modern American spelling variant of Cassidy. It likely derives from the Irish surname Ó Caiside, meaning descendant of Caiside, a name associated with the Gaelic word for curly-haired. Some interpretations also link it to the Greek name Katherine, meaning pure.
Fewer than 5 girls were named Kassadie in 2025.
US births per 5-year period, 1990–present (SSA data).