How to Say "vastness" in Spanish
The Spanish word for “vastness” is “océano” — C1 level.
English → SpanishC1
nounC1formal
immense quantity or space

Examples
Después de la universidad, tenía un océano de posibilidades frente a ella.
After university, she had an ocean of possibilities in front of her.
El poeta describió la tristeza del personaje como un océano de lágrimas.
The poet described the character's sadness as an ocean of tears.
Figurative Use
This meaning is almost always followed by the preposition 'de' (of) to describe what the vast quantity consists of, like 'océano de conocimiento' (ocean of knowledge).
Related Translations
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