How to Say "external" in Spanish
The most common Spanish word for “external” is “exterior” — use 'exterior' when referring to the physical outside surface or part of an object, building, or area..
exterior
ehks-teh-RYOR/eks.teˈɾjoɾ/

Examples
Pintaremos la pared exterior de la casa de azul.
We will paint the exterior wall of the house blue.
Necesitamos revisar el cableado exterior antes de la tormenta.
We need to check the outer wiring before the storm.
Gender Consistency
This adjective describes nouns, but unlike many Spanish adjectives, it looks the same whether the noun is masculine (muro exterior) or feminine (pared exterior).
extranjero
ehx-trahn-HEH-roh/eks.tɾaŋˈxe.ɾo/

Examples
Mi hermana estudia un idioma extranjero.
My sister studies a foreign language.
La inversión extranjera es importante para la economía.
Foreign investment is important for the economy.
Matching the Noun
As an adjective, 'extranjero' must change its ending to match the thing it describes in gender (o/a) and number (singular/plural).
Gender Mismatch
Mistake: “Compré una comida extranjero.”
Correction: Compré una comida extranjera. (Because 'comida' is feminine.)
Exterior vs. Extranjero
Related Translations
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