"insular" in the adjective sense
1. insular
relating to or characteristic of or situated on an island
"insular territories"
"Hawaii's insular culture"
2. insular
suggestive of the isolated life of an island so deeply private as to seem inaccessible to the scrutiny of a novelist"- Leonard Michaels
"an exceedingly insular man
3. insular, parochial
narrowly restricted in outlook or scope
"little sympathy with parochial mentality"
"insular attitudes toward foreigners"
Source: WordNet® (An amazing lexical database of English)
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