The name quinceañera is formed in Spanish from quince, the word for fifteen.
Spanish is the language associated with the term and with the tradition’s name in international usage. The word’s spelling includes the letter ñ, a distinctive Spanish letter pronounced with a sound similar to the “ny” in “canyon.” English speakers commonly use the original Spanish term when discussing the celebration.
Portuguese, French, and Italian are also Romance languages, so their number words may look related, but they do not produce the word quinceañera. Portuguese uses quinze for fifteen, French uses quinze, and Italian uses quindici. The celebration is practiced by diverse communities, including people who speak English or other languages, but the traditional name remains Spanish.