Sunnie \s(un)-nie\ as a boy's name (also used as girl's name Sunnie), is a variant of Sunny. See for origin and meaning of Sunnie.
The baby name Sunnie sounds like Sonnie and Sunney. Other similar baby names are Ronnie, Sandie, Lonnie, Bennie, Vinnie, Connie, Dannie, Dennie, Donnie, Dunne, Mannie, Jonnie, Kennie, Lannie, Lennie, Linnie, Rennie, Sivnie, Sunil and Tannie.