'tight-knit' definitions:

Definition of 'tight-knit'

adjective

Closely and firmly integrated; "a tight-knit organization" [syn: tight-knit, tightly knit]

From: GCIDE

integrated \integrated\ adj.
1. Formed or united into a whole.
Syn: incorporate, incorporated, merged, unified. [WordNet 1.5]
2. Formed into a whole or introduced into another entity; as, an integrated Europe. Opposite of nonintegrated. [Narrower terms: coordinated, interconnected, unified; embedded; incorporated; tight-knit, tightly knit]
a more closely integrated economic and political system --Dwight D. Eisenhower [WordNet 1.5]
3. Having different groups treated together as equals in one group; as, racially integrated schools. [Narrower terms: co-ed, coeducational; {desegrated, nonsegregated, unsegregated}; interracial; mainstreamed] Also See: integrative, joint, united. Antonym: segregated. [WordNet 1.5 +PJC]
4. Resembling a living organism in organization or development. [Narrower terms: organic (vs. inorganic)]
Syn: structured. [WordNet 1.5]
5. combined. Opposite of uncombined. [WordNet 1.5 +PJC]
6. having constituent parts mixed to form a single unit. Opposite of unmixed. [Narrower terms: blended[2]]
Syn: amalgamated, intermingled, mixed. [WordNet 1.5 +PJC]