Kassidy

Kassidy is a modern spelling of Cassidy, an Irish surname derived from Ó Caiside. That surname identifies a descendant of Caiside, a personal name associated with curly hair. The meaning therefore comes through a family name; Kassidy was not originally an Irish vocabulary word used directly as a first name.

Changing C to K leaves the familiar three-syllable sound intact but creates a more contemporary appearance. Kass and Kassie are straightforward short forms. Like Cassidy, Kassidy has been used for both boys and girls, although its current American use leans toward girls. Families wanting the most recognizable surname spelling may prefer Cassidy; those already using K names may find Kassidy a better visual fit.