close-knit
US /ˌkloʊsˈnɪt/
UK /ˌkloʊsˈnɪt/

1.
uni, solidaire
closely bound together by a common interest or purpose
:
•
They are a close-knit family that always supports each other.
C'est une famille unie qui se soutient toujours.
•
The small community was very close-knit.
La petite communauté était très unie.