Updated June 9, 2019 Share: Girl name origins & meanings Irish : Vigilant, watchfulIrish : Brave Girl name variations Casey Cacey Cacia Cacie Caisee Caisey Caisi Caisie Casee Casi Casie Caycee Caycey Cayci Caycie Caysee Caysey Caysi Kaysey Kaysi Kaysy Kaysyee Kacey K. C. K. Cee Kace Kacee Kaci Kacy Kasey Kasie Kaycee Kaycie Boy name origins & meanings Welsh, German : Rejoicer; fort; joyful Boy name variations Kay Kai Kaye Keh MacKay How Popular Is The Name Kaysie