This is the 9002nd most frequent Portuguese word.
autentico
Authentic; genuine; real.
In this sentence, 'autêntica' means having genuine, traditional, or real characteristics of Brazilian cuisine.
Este restaurante oferece comida autêntica brasileira.
This restaurant offers authentic Brazilian food.
Here, 'autênticos' refers to being true, genuine, and sincere.
Seus sentimentos são autênticos e muito transparentes.
His feelings are authentic and very transparent.
In this context, 'autêntica' conveys the sense of being original, not a replica or imitation.