PUSTEQUE In Mexico: cunning, frustrated. Typically used to criticize children who don't eat food that has taken hours to prepare.
My grandmother used it to signal when someone didn't want to eat something because it seemed unpleasant, such as seeing a vein in a chicken leg and not wanting to eat it for it. I don't know if the word exists
It means sad, desolate, disappointed, depressed, heartbroken. That he is overwhelmed by sadness or disappointment.