doctrinaire
adjective/ˌdɒktrɪˈneə(r)/
/ˌdɑːktrɪˈner/
(disapproving)- strictly following a theory in all circumstances, even if there are practical problems or people disagree
- a doctrinaire conservative
- doctrinaire attitudes/beliefs/policies
Word Originearly 19th cent.: from French, from doctrine, from Latin doctrina ‘teaching, learning’, from doctor ‘teacher’, from docere ‘teach’.
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doctrinaire