What does Sonnie mean?
Sonnie \s(on)-nie\ as a name for girls (also used as boys' name Sonnie) is of English and Greek derivation, and the meaning of the name Sonnie is "wisdom". Sonnie is a form of Sonia (English). Sonnie is also a variant of Sophia (Greek): used in English-speaking countries since the 17th century.
Sonnie is an unusual first name for females. Sonnie is an unusual surname too for both adults and children. (2000 U.S. Census)
Prominent alternative forms of Sonnie (#unlisted) are Sofia (#12 the previous year), Sofie, Sonia (#946), Sonja, Sonya, Sophia (#3) and Sophie (#91). These girl names reached the top of their popularity in the year 1999 and are somewhat less popular today, with the forms Sonia, Sonja and Sonya becoming less trendy. Sofia (#12), Sophia (#3) and Sophie (#91) are three of the more fashionable names for newborns here, with these names having a resurgence in popularity. Displayed below is a comparison of the popularity of the girl name Sonnie and associated names. (Top 1000 Birth Names Records, 2014)
Sonnie is pronounced similarly to Cinnie, Cynnie, Sannie, Sinnie, Sunnee, Sunni, Sunnie, Swannie and Zannie. Other suggested similar baby names are Bonnie▼, Connie▼, Donnie▼, Jonnie▼, Konnie, Lonnie▼, Monnie, Nonnie, Ronnie▼, Shanie and Vonnie. These names tend to be more commonly used than Sonnie.