How to Say "eternal life" in Spanish
The Spanish word for “eternal life” is “inmortalidad” — B2 level.

Examples
Muchos personajes de leyendas buscaban la fuente de la inmortalidad.
Many legend characters were looking for the fountain of immortality.
La inmortalidad del alma es una creencia común.
The immortality of the soul is a common belief.
Su gran descubrimiento le dio la inmortalidad en el mundo de la ciencia.
Her great discovery gave her immortality in the world of science.
Always Feminine
Spanish words that end in '-dad' are almost always feminine. You should always use 'la' or 'una' with this word.
Abstract Concept Articles
When talking about general ideas like 'immortality,' Spanish usually needs the word 'la' (the) at the start of the sentence, even if English doesn't use 'the'.
Using the Wrong Gender
Mistake: “El inmortalidad es un sueño.”
Correction: La inmortalidad es un sueño. (The ending '-dad' tells you it is a feminine word).
Related Translations
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