ultra

being very far from the center of public opinion espouses a kind of ultra conservatism that even some members of his own party cannot support Synonyms extremist, fanatic (or fanatical), rabid, radical, revolutionary, revolutionist, extremeRelated Words subversive, violent, wild; reactionaryNear Antonyms conservative, moderate, temperate; conventional, orthodox, traditional; liberal, progressiveAntonyms middle-of-the-road, nonrevolutionary, unrevolutionary