Formal:
* Passer du temps de qualité: This is the most literal translation and is suitable for formal situations.
* Consacrer du temps de qualité: This emphasizes the dedication and intentionality of spending time with someone or something.
Informal:
* Passer du bon temps: This means "to have a good time" and is a more general way to describe enjoying time spent together.
* Profiter de moments précieux: This emphasizes the value of the time spent together.
* S'amuser ensemble: This means "to have fun together" and is a more casual way to describe spending time with someone.
Example sentences:
* J'aime passer du temps de qualité avec ma famille. (I like spending quality time with my family.)
* Il est important de consacrer du temps de qualité à ses amis. (It is important to dedicate quality time to one's friends.)
* On a passé du bon temps à la plage. (We had a good time at the beach.)
* J'ai profité de moments précieux avec mon enfant. (I enjoyed precious moments with my child.)
* On s'est bien amusés ensemble au cinéma. (We had fun together at the cinema.)
The best way to say "spending quality time" in French depends on the specific situation and the feeling you want to convey.