n. 25B6; adjective
insular people : NARROW-MINDED, small-minded, blinkered, inward-looking, parochial, provincial, small-town, short-sighted, hidebound, set in one's ways, inflexible, rigid, entrenched; illiberal, intolerant, prejudiced, bigoted, biased, partisan, xenophobic; Brit. blimpish.
an insular existence : ISOLATED, inaccessible, cut off, segregated, detached, solitary, lonely.
broad-minded, cosmopolitan.