doctrinairism

/ˌdɑktrəˈnɛrɪzəm/
noun
  1. Stubborn or impractical attachment to a doctrine or theory, without regard for practical circumstances.
    • The organization's doctrinairism led to policies that ignored real-world needs.
    • The politician's doctrinairism prevented him from compromising on the budget.
    • Her doctrinairism made it hard for the team to adapt to changing market conditions.
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