infiel
/een-FYEHL/
unfaithful

A person feeling the sadness of an unfaithful relationship.
infiel(adjective)
unfaithful
?romantic relationships
disloyal
?general loyalty or promises
,inaccurate
?rare; used for translations or copies
📝 In Action
Él le fue infiel a su esposa.
B1He was unfaithful to his wife.
No quiero ser infiel a mis principios.
B2I don't want to be disloyal to my principles.
💡 Grammar Points
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).
❌ Common Pitfalls
Avoid 'infiela'
Mistake: "ella es infiela"
Correction: ella es infiel
⭐ Usage Tips
Using it with 'ser' vs 'estar'
Use 'ser' to describe someone's character ('He is an unfaithful person') and 'ser' or 'haber sido' to talk about the act itself.

A depiction of a cheater keeping a secret from their partner.
📝 In Action
Ella descubrió que él era un infiel.
B1She discovered that he was a cheater.
En la antigüedad, llamaban infieles a los que no compartían su religión.
C1In ancient times, they called those who didn't share their religion infidels.
✏️ Quick Practice
💡 Quick Quiz: infiel
Question 1 of 1
How do you say 'She is unfaithful' in Spanish?
📚 More Resources
Frequently Asked Questions
Is 'infiel' used for lying?
Not exactly. It specifically means breaking a promise of loyalty or cheating. For general lying, use 'mentiroso'.
Can I use 'infiel' for a dog?
It's rare. We usually use 'leal' (loyal) or 'desleal' (disloyal) for pets, while 'infiel' is almost always reserved for romantic cheating or religious contexts.