葡語除了按雄性生物、雌性生物區分陽性名詞和陰性名詞外，還根據詞的后綴區分，如：

陽性名詞                      陰性名詞

o                             a

ço                            ção

so                            são

us                            ça

or                            sa

u                            dem

                                 te

                                de