How to Say "harbinger" in Spanish
The Spanish word for “harbinger” is “mensajero” — B2 level.
English → SpanishB2
nounB2formal
a sign of something to come

Examples
Las golondrinas son mensajeros de la primavera.
Swallows are harbingers of spring.
La caída de la bolsa fue un mensajero de la crisis económica.
The stock market crash was a precursor to the economic crisis.
Figurative Use
In this context, 'mensajero' doesn't refer to a person, but to an object or event that 'carries' information or warns you about what will happen next.
Related Translations
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