closed minded

/kloʊzdˈmaɪndɪd/
adjective
  1. Not willing to consider new or different ideas; having a narrow point of view.
    • The manager's closed-minded attitude prevented the team from trying innovative solutions.
    • She was too closed-minded to listen to any opinion that differed from her own.
    • A closed-minded person often rejects scientific evidence that challenges their beliefs.
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