radical Synonyms

extremist root fundamental revolutionary group far-reaching sweeping stem root word unorthodox profound basal militant complete primitive ultra nonconformist original insurgent essential extreme theme thoroughgoing reformist drastic base basic forward-looking ultraist underground structural underlying uncompromising undermost ideologue hothead fundamentalist partizan chemical group activist bomber all-embracing across the board meliorist prostatectomy underived zealot utter utopist Maoist