This is the 11283rd most frequent French word.
quittée
"Quittée" means "left" or "abandoned," typically referring to someone who has been left by another person.
In this sentence, 'quittée' is the past participle of 'quitter,' showing that the action of leaving (her) has occurred in the past. It agrees in gender and number with its direct object, 'her,' because it's used with the auxiliary verb ' avoir' and there's a preceding direct object.
Elle l'a quittée après une longue réflexion.
She left her after a long reflection.
Here, 'quittée' again functions as the past participle, agreeing in gender and number (feminine singular) with the direct object, 'la maison,' reflecting the action directed toward the house.
La maison qu'elle avait quittée était magnifique.
The house she had left was magnificent.
In this case, 'quittés' represents the plural agreement in gender with the subject 'ils,' reflecting mutual separation after interaction.