From Latin duplus. IPA(key): /ˈdudd͡ʒu/ dóggio (feminine singular dóggia, masculine plural dóppi, feminine plural dógge) double, dual, two (attributive)...
gg-g gradation) nominative doggi dogit genitive dogin doggien partitive doggia doggeja illative doggiin doggeihin singular plural nominative doggi dogit...