Updated June 9, 2019 Share: Girl name origins & meanings Irish : Vigilant, watchful Girl name variations Casey Cacey Cacia Cacie Caisee Caisey Caisi Caisie Casee Casie Caycee Caycey Cayci Caycie Caysee Caysey Caysi Kaysey Kaysi Kaysie Kaysy Kaysyee How Popular Is The Name Casi