How to Say "disloyal" in Spanish
The most common Spanish word for “disloyal” is “infiel” — use 'infiel' when referring to a breach of promises, especially in romantic relationships or commitments, implying unfaithfulness..
infiel
/een-FYEHL//inˈfjel/

Examples
Él le fue infiel a su esposa.
He was unfaithful to his wife.
No quiero ser infiel a mis principios.
I don't want to be disloyal to my principles.
One Word for Both Genders
This word doesn't change its ending for men or women. You use 'infiel' for both 'él' (he) and 'ella' (she).
Avoid 'infiela'
Mistake: “ella es infiela”
Correction: ella es infiel
traidor
trah-EE-dor/tɾaˈiðoɾ/

Examples
La memoria es traidora cuando uno intenta recordar detalles viejos.
Memory is treacherous/deceitful when one tries to recall old details.
Tuvimos que cruzar un camino traidor lleno de hielo.
We had to cross a treacherous path full of ice.
Adjective Agreement
Like all Spanish adjectives, 'traidor' must match the gender and number of the noun it describes: 'camino traidor' (m. singular) but 'sonrisa traidora' (f. singular).
Infiel vs. Traidor
Related Translations
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