How to Say "blurt out" in Spanish
The Spanish word for “blurt out” is “vomitar” — C1 level.
English → SpanishC1
verbC1informal
secrets or confessions

Examples
El político solo hace que vomitar promesas vacías.
The politician only spews out empty promises.
Después de la pelea, él le vomitó todos los insultos que había guardado.
After the fight, he hurled all the insults he had kept inside at her.
El estudiante solo podía vomitar datos que no entendía en el examen.
The student could only regurgitate facts he didn't understand on the exam.
Figurative Use
When used figuratively, 'vomitar' describes an uncontrolled, often negative, outpouring of something non-physical, like emotions, insults, or poorly understood information.
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