How to Say "to cross-check" in Spanish
The Spanish word for “to cross-check” is “contrastar” — B2 level.

Examples
El periodista debe contrastar la noticia antes de publicarla.
The journalist must verify the news story before publishing it.
Hemos contrastado los datos con tres fuentes distintas.
We have cross-checked the data with three different sources.
Es vital contrastar los resultados del experimento.
It is vital to confirm the results of the experiment.
Verifying 'Against' something
Even in this professional sense, you still use 'con' to indicate what source you are checking the information against.
Confusing with 'Confirmar'
Mistake: “Contraste que la puerta estaba cerrada.”
Correction: Confirmé que la puerta estaba cerrada. Why? Contrastar involves comparing two pieces of data to see if they match or differ; confirming is just checking if something is true.
Related Translations
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