Gender / Sex: boy
Sounds Like: Cass, Gus, Guus, Case, Casey, Cayce, Cacey, Cace, Caz, Kass
Variant forms: Cai, Caio, Kay, Kaye, Keye, Keyes, Keys
Caius \caius\ as a boy's name is pronounced keys. It is of Latin origin, and the meaning of Caius is "rejoice". Variant of Gaius. A 16th-century English physician endowed a college at Cambridge University called "Gonville and Caius".
Caius has 7 variant forms: Cai, Caio, Kay, Kaye, Keye, Keyes and Keys.
Baby names that sound like Caius are Cass, Gus, Guus, Case, Casey, Cayce, Cacey, Cace, Caz and Kass.
View a list of the 3 names that reference Caius.
Caius is not a popular first name for men and an equally uncommon surname or last name for both men and women. (1990 U.S. Census)