Syntheea \s(y)-ntheea, syn-theea\ as a girl's name is a variant of Cynthia (Greek), and the meaning of Syntheea is "from Mount Kynthos".
The baby name Syntheea sounds like Synthee, Synthya, Synthie, Synthia, Syntha and Cynthea. Other similar baby names are Anthea, Antheia, Annthea, Syndee, Kynthia, Cynthya, Cynthie, Panthea, Pantheia and Penthea.