idealogue

/aɪˈdiːəˌlɔːɡ/
noun
  1. A person who strongly supports a particular set of ideas or beliefs, often in a strict or uncompromising way.
    • Some people see him as a visionary, while others call him an idealogue.
    • An idealogue often has trouble seeing other points of view.
    • The senator is an idealogue who refuses to compromise on any issue.
Antonyms
What does "idealogue" mean? | whatsthatwordmean | whatsthatwordmean