What language is the word “quinceañera” borrowed from?

The word quinceañera is borrowed from Spanish.

Spanish is the language of the term and of its central number word, quince, meaning fifteen. The word names a cultural celebration associated with a girl’s fifteenth birthday and is commonly retained in Spanish even when the surrounding conversation is in English. Its spelling includes the ñ character.

The tradition is practiced in many Latin American and Latino communities, so its customs are not identical from one country or family to another. Spanish-language terminology can therefore appear alongside local religious practices, music, clothing, and regional traditions. English speakers may describe it as a fifteenth-birthday celebration, but quinceañera remains the standard widely recognized name.

Quinceañera is not a Portuguese, Italian, or French word. Portuguese uses quinze for fifteen, while Italian uses quindici and French uses quinze. Those similarities reflect related Romance languages, but they do not change the origin of the celebration’s usual name.