close-knit
US /ˌkloʊsˈnɪt/
UK /ˌkloʊsˈnɪt/

1.
unido, coeso
closely bound together by a common interest or purpose
:
•
They are a close-knit family that always supports each other.
Eles são uma família unida que sempre se apoia.
•
The small community was very close-knit.
A pequena comunidade era muito unida.