How to Say "prolific" in Spanish
The Spanish word for “prolific” is “fértil” — B2 level.
English → SpanishB2
adjectiveB2formal
referring to someone who produces many ideas or works

Examples
El autor tiene una imaginación fértil.
The author has a fertile imagination.
Fue una época fértil para la música rock.
It was a prolific era for rock music.
Su mente fértil siempre encuentra soluciones a los problemas.
His fertile mind always finds solutions to problems.
Figurative Use
When describing a mind or imagination, 'fértil' acts just like 'fertile' in English to mean 'full of ideas'.
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