doctrinaire
adjective formal disapproving uk/ˌdɒk.trɪˈneər/ us/ˌdɑːk.trəˈner/
教条主义的;脱离实际的
based on and following fixed beliefs rather than considering practical problems
He has a somewhat doctrinaire approach to running the company. 他经营公司的方法有些教条主义。