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Sly meaning and name origin
Sly \s-ly\ as a boy's name is a variant of Sylvester (Latin), and the meaning of Sly is "wooded".
The baby name Sly sounds like Sal, Sol, Seely, Sela, Sill and Sully. Other similar baby names are Aly, Bly, Ely and Sky.
Popularity of Sly
Sly is not a popular first name for men but a very popular surname or last name for all people (#9630 out of 88799). (1990 U.S. Census)
Displayed below is the baby names popularity of the name Sly for boys. (2010 statistics) Compare Sly with its source form and related boy baby names.