How to Say "appalling" in Spanish
The Spanish word for “appalling” is “monstruoso” — C1 level.
English → SpanishC1
adjectiveC1formal
very bad or disgusting behavior

Examples
Fue un crimen monstruoso que conmocionó al país.
It was an atrocious crime that shocked the country.
Me parece monstruoso que no ayuden a los necesitados.
I find it appalling that they don't help those in need.
La crueldad de la guerra es algo monstruoso.
The cruelty of war is something monstrous.
Abstract usage
In this context, 'monstruoso' doesn't describe how something looks, but rather the moral quality of an action.
Related Translations
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