Sib \sib\ as a girl's name is a variant of Sibyl (Greek), and the meaning of Sib is "prophetess, oracle".
The baby name Sib sounds like Saba, Zuba, Sabah and Zeba. Other similar baby names are Lib, Kiba, Mab, Bibi, Bab, Sile, Siri, Deb, Fiby, Ib, Liby, Liba, Sal, Sam, San, Sina, Sima, Sine, Sibel, Sky, Skie, Sue, Xia, Zia and Ziv.