Gender / Sex: boy (Sonnie's also a girl name)
Sounds Like: Sunnie, Signe, Sunny, Sunney
Similar Names: Ronnie, Lonnie, Connie, Donnie, Jonnie
Sonnie \s(on)-nie\ as a boy's name (also used as girl's name Sonnie), is a variant of Sonny (English), and the meaning of Sonnie is "son".
The baby name Sonnie sounds like Sunnie, Signe, Sunny and Sunney. Other similar baby names are Ronnie, Lonnie, Connie, Donnie and Jonnie.
Sonnie is not a popular first name for men and an equally uncommon surname or last name for both men and women. (1990 U.S. Census)