to deepen, to explore in greater depth
Ça ressemble à quelque chose qu'on pourrait approfondir demain.
That sounds like something we could explore further tomorrow.
— Projet Dernière Chance (2026)
Nous devons approfondir ce mystère.
We must delve deeper into this mystery.
Je voudrais approfondir mes connaissances en hongrois.
I would like to deepen my knowledge of Hungarian.
Je vais devoir approfondir cette question.
I will have to look into this further.
Il est allé en Angleterre afin d'approfondir sa connaissance de la culture.
He went to England to deepen his understanding of the culture.