How to Say "to betray" in Spanish
The Spanish word for “to betray” is “vender” — C1 level.
English → SpanishC1
verbC1neutral/informal (often figurative)
to reveal secrets

Examples
Se vendió a la empresa por un ascenso y mucho dinero.
He sold out to the company for a promotion and a lot of money.
No puedes vender a tus amigos revelando sus secretos.
You can't betray your friends by revealing their secrets.
Los críticos dicen que el artista se ha vendido al mercado comercial.
Critics say the artist has sold out to the commercial market.
Reflexive Meaning (Venderse)
When you add the little word 'se' (venderse), the meaning shifts from a transaction to a moral compromise—the person is selling their own integrity or loyalty.
Related Translations
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