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Adjective: insular  in-su-lur or in-syû-lur [N. Amer], in-syû-lu(r) [Brit]
  1. Suggestive of the isolated life of an island
    "an exceedingly insular man; so deeply private as to seem inaccessible to the scrutiny of a novelist"
  2. Narrowly restricted in outlook or scope
    "insular attitudes toward foreigners";
    - parochial
  3. Relating to or characteristic of or situated on an island
    "insular territories"; "Hawaii's insular culture"

See also: private, provincial

Encyclopedia: Insular