葡语除了按雄性生物、雌性生物区分阳性名词和阴性名词外，还根据词的后缀区分，如：

阳性名词                      阴性名词

o                             a

ço                            ção

so                            são

us                            ça

or                            sa

u                            dem

                                te

                               de