I seen it written as slang, but have no clue what it means.
Inconnu chez moi… à priori. Where did you encounter this word? Written, spoken?
I just clicked! In France we use a lot of “Verlan”, reversed for “à l’envers” 
You mean here “grillé” or in Verlan “yégri”.
When you are grille, you can be found out or outwitted.
1 Like
I encountered it on the street, but I also heard it in a song.
“Complètement iégris
Et totalement aigris par une vie pourrie aux alentours de Paris”
Is the total context, what do you interpret it to mean. It is a type of slang you mean?
I guess he means that he is completely burnt out/finished.
It must be a french rap, who is the author/singer?