Duffie \d(uf)-fie\ as a boy's name is a variant of Duff (Gaelic), and the meaning of Duffie is "swarthy".
The baby name Duffie sounds like Duffy and Duffey. Other similar baby names are Jeffie, Danie, Dannie, Davie, Daffyd, Daffy, Dennie, Derrie, Dewie, Donnie, Duane, Duayne, Duke, Dunne, Fyffe, Hughie, Raffi, Dickie and Tullie.