Meaning of “insular” in the English Dictionary

"insular" in British English

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(Definition of “insular” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"insular" in American English

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insularadjective

us /ˈɪn·sə·lər, -sjə-/

interested only in your own country or group and not willing to accept different or foreign ideas or people

(Definition of “insular” from the Cambridge Academic Content Dictionary © Cambridge University Press)