This is the 11144th most frequent Spanish word.
empañados
"Empañados" means "fogged," "steamed up," or "tarnished," depending on the context.
Here, 'empañados' is used to describe the state of the car windows being covered with condensation due to the cold.
Los cristales del coche están empañados por el frío.
The car windows are fogged up due to the cold.
In this context, 'empañaron' is used to express the action of glasses becoming fogged due to a temperature change.
Mis lentes se empañaron cuando entré al cuarto caliente.
My glasses fogged up when I entered the hot room.
Here, 'empañados' metaphorically describes how the recollection of memories is obscured or clouded because of sadness.