[{"Bold_text": "noun", "List Items": ["a person who tries to apply some doctrine theory without sufficient regard for practical considerations; an impractical theorist."]}, {"Bold_text": "adjective", "List Items": ["dogmatic about others' acceptance of one's ideas; fanatical:a doctrinaire preacher.Synonyms: unyielding , inflexible , uncompromising , authoritarian Antonyms: flexible , reasonable", "merely theoretical; impractical.", "of, relating to, or characteristic of a doctrinaire."]}]