名詞 doctrinaire:

1. a stubborn person of arbitrary or arrogant opinions
   同義詞：dogmatist

形容詞 doctrinaire:

1. stubbornly insistent on theory without regard for practicality or suitability

doc.tri.naire

n.（名詞）
A person inflexibly attached to a practice or theory without regard to its practicality.
教條主義者：不顧實際而一味堅持某一經(jīng)驗和理論的人
adj.（形容詞）
Of, relating to, or characteristic of a person inflexibly attached to a practice or theory.See Synonyms at dictatorial
教條主義的：空談理論的，脫離實際的，教條主義的參見 dictatorial

來源：
French
法語
from doctrine [doctrine]
源自 doctrine [教義]
from Old French * see doctrine
源自 古法語 *參見 doctrine

【引伸】
doc.trinair.ism
n.（名詞）
doc.trinar.ian
n.（名詞）