Cassadie as a Baby Name. Meaning and Origin of Cassadie

What is the meaning of the name Cassadie ?

The baby name Cassadie is a Female name , 3 syllables long and is pronounced KASS-ə-dee (KASS-uh-dee); sometimes KASS-ay-dee (KASS-ay-dee).

Cassadie is Irish in Origin.

Cassadie is a modern respelling of Cassidy, the Anglicized Irish surname Ó Caiside. The surname means “descendant of Caiside,” with Caiside probably linked to Gaelic cas, “curly, twisted,” giving the sense “curly‑haired one.” Families bearing Ó Caiside served as hereditary physicians and poets in medieval Fermanagh, which lends the name a scholarly, artistic aura.

As a given name, Cassadie emerged in the 20th century as surnames shifted into first-name use, rising in North America under the influence of pop culture references such as Butch Cassidy, teen idol David Cassidy, and the Grateful Dead song “Cassidy.” It remains technically unisex, though modern usage skews feminine. Close variants include Cassidy, Cassady, Casidy, Cassidie, Kassidy, Kassadi, and Cassadee; common nicknames are Cass and Cassie. Cassadie keeps the breezy three-syllable cadence while offering a distinctive look, with meanings tied to heritage and lively curls.