Cassadie

Meaning & origin

Cassadie first appeared in U.S. birth records in 1985, more than a decade after the rise of Cassidy as a popular given name. Its peak year was 1996, a time when creative spellings of established names were in vogue. Since then, usage has remained stable but low, never entering the top 1,000 rankings. The name shows a decade preference for the 1990s, reflecting the broader trend of Irish surname names for girls. Cassadie has no recorded top states, indicating its use is scattered across the country. The core name Cassidy itself is a classic Irish surname turned modern American favorite, and Cassadie represents an even more individualized twist.

Cassadie is a modern respelling or diminutive variant of the Irish surname Cassidy, which derives from the Gaelic Ó Caiside, meaning 'descendant of Caiside'. The personal name Caiside is thought to mean 'curly-haired' or 'curly-headed'. The surname was historically associated with a learned family in County Fermanagh. In the late 20th century, Cassidy gained popularity as a given name for girls in the United States, and creative spellings like Cassadie emerged in the 1990s.