Caysi \ca(y)-si\ as a girl's name is a variant of Casey (Irish, Gaelic), and the meaning of Caysi is "alert, watchful".

The baby name Caysi sounds like Kaysi, Caysie, Cayse, Cayci, Casi, Caisi and Cassi. Other similar baby names are Daysi, Kasi, Caysha, Cassy, Cassie, Casia, Cadi, Cai, Caiti, Calli, Cali, Cami, Cammi, Cari, Carri, Carys, Kaysy, Kaysie, Kayse, Kayci, Cazzi, Caysey, Caysee, Caycie, Cayce, Casy, Casse, Cass, Casie, Caisie, Caci, Kassi, Cas, Cassia, Caye, Cay, Cati, Cathi, Cayla, Caylie, Caylia, Deysi, Daisi, Kaydi, Kayli, Maysa and Cissi.