What does "close-knit" mean?

Of a group: closely connected or linked, as by a common bond, culture, or identity.

What is a synonym for "close-knit"?

Common synonyms include: close, closely knit, compact, compressed, concentrated, concrete.

/kləʊs ˈnɪt/ adj

adj ·Rare ·Advanced level

Adjective

1
Of a group: closely connected or linked, as by a common bond, culture, or identity.
"a close-knit community"

Adjective

"Linda developed a close-knit relationship with Dan's children."

From close (“in an intimate or immediate manner”, adverb) + knit (“joined closely and firmly together”, adjective).