This is the 4174th most frequent Catalan word.
enfortir
To strengthen.
In this sentence, 'enfortir' is used to express the physical strengthening of muscles.
El futbol ajuda a enfortir els músculs.
Football helps strengthen muscles.
Here, 'enfortir' is metaphorically used to describe improving emotional bonds and relationships.
Ell treballa per enfortir la relació amb els seus amics.
He works to strengthen the relationship with his friends.
In this context, 'enfortir' refers to making something such as security more robust and effective.