Cynthya \cy-nth-ya, cyn-thya\ as a girl's name is a variant of Cynthia (Greek), and the meaning of Cynthya is "from Mount Kynthos".
The baby name Cynthya sounds like Synthya and Cynthea. Other similar baby names are Synthia, Syntha, Cynthie, Cinthia, Cinthy and Cintha.