How to Say "smug" in Spanish
The Spanish word for “smug” is “engreído” — B1 level. This is a very common word in everyday Spanish.

Examples
Él es un tipo muy engreído y no escucha a nadie.
He is a very conceited guy and doesn't listen to anyone.
No seas tan engreído, todos cometemos errores a veces.
Don't be so stuck-up, we all make mistakes sometimes.
Su actitud engreída alejó a todos sus amigos.
Their smug attitude pushed all their friends away.
Matching the Person
Since this is a describing word, you must change the ending to '-a' if you are talking about a woman (engreída) or add an '-s' for plural (engreídos/engreídas).
Using with 'Ser'
We usually use this with the verb 'ser' (to be) because arrogance is seen as a personality trait, not a temporary mood.
Don't confuse with 'Grateful'
Mistake: “Using 'engreído' to mean thank you.”
Correction: Use 'agradecido' for grateful. 'Engreído' means the opposite of humble!
Related Translations
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