How to Say "unknown" in Spanish
The Spanish word for “unknown” is “desconocido” — A2 level. This is a very common word in everyday Spanish.

Examples
Fuimos a una playa completamente desconocida.
We went to a completely unknown beach.
El origen de la señal sigue siendo desconocido.
The origin of the signal continues to be unknown.
Ella exploró tierras desconocidas en el mapa.
She explored unfamiliar lands on the map.
Making it Match
Like most Spanish adjectives, 'desconocido' must change its ending to match the noun it describes: use '-a' for feminine nouns (la casa desconocida), '-os' for masculine plural nouns, and '-as' for feminine plural nouns.
Forgetting Agreement
Mistake: “Vi una persona desconocido.”
Correction: Vi una persona desconocida. (Since 'persona' is a feminine noun, the adjective must end in -a.)
Related Translations
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