Spanish supplies the word quinceañera, whose root refers to fifteen years.
The word is formed from quince, meaning 15, with a feminine ending associated with a girl or young woman. It is used throughout Spanish-speaking communities and by many families in the wider Latin American diaspora. The spelling’s ñ is characteristic of Spanish orthography.
The phrase quince años literally means “fifteen years,” and fiesta de quince años means a fifteenth-birthday party. English commonly borrows quinceañera for both the celebrant and the event, while Spanish usage can distinguish those meanings through context.
Portuguese-speaking communities may have related coming-of-age customs, but Portuguese is not the source of the Spanish term. The language clue is therefore a direct part of the tradition’s name, not merely a translation choice made by English speakers.