This is the 985th most frequent Spanish word.
quedarse
"Quedarse" means "to stay" or "to remain" in English.
This usage of 'quedarse' means 'to stay,' referring to remaining in a particular location.
Ana se quedó en casa durante todo el día.
Ana stayed at home all day.
Here, 'quedarse' is used idiomatically to express the emotional or mental state resulting from an experience.
Me quedé impresionado con la presentación de Juan.
I was impressed by Juan's presentation.
In this case, 'quedarse' signifies a state of becoming without something, indicating a lack or loss.