How to Say "unnamed" in Spanish
The Spanish word for “unnamed” is “anónimo” — B1 level. This is a very common word in everyday Spanish.

Examples
El autor del libro es anónimo.
The author of the book is anonymous.
Recibimos una donación anónima para el hospital.
We received an anonymous donation for the hospital.
Prefiero mantenerme anónimo por seguridad.
I prefer to remain anonymous for safety.
Gender Agreement
Even though 'anónimo' ends in 'o', you must change it to 'anónima' if the thing you are describing is feminine, like 'una carta' (a letter).
Word Order
This word usually comes after the noun it describes, just like most Spanish adjectives. For example: 'un correo anónimo' (an anonymous email).
Using the wrong word for 'anonymity'
Mistake: “Me gusta el anónimo de la gran ciudad.”
Correction: Me gusta el anonimato de la gran ciudad.
Related Translations
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