Cleytus \c-ley-tus\ as a boy's name is a variant of Cletus (Greek), and the meaning of Cleytus is "illustrious; called forth, invoked".
The baby name Cleytus sounds like Kletus, Cletos, Cletis and Clitus. Other similar baby names are Altus, Claus, Clayton, Cleophus, Cleofas, Kletos and Clete.