Cassidy as a Baby Name. Meaning and Origin of Cassidy

What is the meaning of the name Cassidy ?

The baby name Cassidy is a Unisex name , 3 syllables long and is pronounced /ˈkæsɪdi/ (KAS-ih-dee).

Cassidy is Irish in Origin.

Cassidy is an Anglicized Irish surname turned given name, from O Caiside, meaning "descendant of Caiside." The personal name Caiside is linked to the Gaelic root cas, "curly, twisted," yielding the sense "curly-haired." The O'Cassidy family were noted medieval physicians and poets in Fermanagh, which helped the name circulate in Gaelic records before it migrated into English.

In the modern era Cassidy moved from surname use into a unisex given name in English-speaking countries, especially the United States and Canada, where it trends largely feminine since the late 20th century. Cultural visibility of the surname, from entertainers to the western folklore of "Butch Cassidy," aided its adoption. Variants include Cassady, Cassiday, Cassedy, and modern respellings Kassidy, Cassidi, Cassidee; the older Gaelic forms are O Caiside and Caiside. Common diminutives are Cass and Cassie, with occasional Sid/Siddy. The name's core meaning remains "curly-haired."