close-knit /ˌkləʊs ˈnɪt◂ $ ˌkloʊs-/ (
also ˌclosely-ˈknit)
adjective a close-knit group of people is one in which everyone knows each other well and gives each other support when they need it:
a close-knit community [TahlilGaran] Dictionary of Contemporary English ▲