What does Sybil mean?
(female) Sibil, Sybyl, ..
(male) Sybilin, Sybilley, ..
How popular is Sybil?
Sybil is a very prominent first name for females (#693 out of 4276, Top 16%) but an unusual surname for both adults and children. (2000 U.S. Census)
Charted below is the baby name popularity of Sybil for girls. Sybil reached its highest rank of #319 in the U.S. in the 1920s, but is not found in the list currently. (Top 2000 Names, 2014)
Sybilla and Sibyl are the prominent alternative forms of Sybil. Adoption of these forms of Sybil was widespread among parents during 1910-1919 (usage of 0.04%), but now, versions like Sybil have gone out of style.