Narrow-minded, isolated, or resistant to outside influence, especially as a result of self-enclosure

Latin insularis, from insula, 'island'

Parochial Isolated Cloistered
Cosmopolitan Outward-looking
"Critics of the ISI Bill's nominated Board of Governors conceded the counter-argument fairly: self-perpetuating academic bodies can become insular, resistant to reform and unaccountable for outcomes."

Useful in GS2 answers on institutional governance and academic autonomy, e.g., 'an unreformed collegium risks becoming insular precisely where transparency is most needed.'

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