This is the 670th most frequent French word.
propres
"Propres" means "clean" or "own," depending on context.
Here, 'propres' is used as an adjective meaning 'clean', describing the condition of the rooms.
Les enfants ont rangé leurs chambres et maintenant elles sont propres.
The children tidied up their rooms, and now they are clean.
In this sentence, 'propres' conveys possession or individuality, meaning 'own' or 'personal' ideas.
Chacun a apporté ses propres idées à la réunion.
Each one brought their own ideas to the meeting.
The word 'propres' here is used to imply uniqueness or particularity associated with someone, meaning 'distinct' or 'unique to.'