Updated June 9, 2019 Share: Girl name origins & meanings Irish : Vigilant, watchful Girl name variations Casey Cacey Cacia Cacie Caisee Caisey Caisi Caisie Casee Casi Casie Caycee Cayci Caycie Caysee Caysey Caysi Kaysey Kaysi Kaysie Kaysy Kaysyee Boy name origins & meanings Slavic : Peacemaker Boy name variations Casimir Casimeer Casmire Casimiro Casmir Caz Kasimir Kasimiro Kazimierz Kazimir Cace Cacey Casey Cayce Kasey Casimer