WordNet sense 1 (a radical supporter of political or social revolution):

revolutionist, subversive, subverter

WordNet sense 2 (of or relating to or characteristic or causing an axial or orbital turn):

rotatory

WordNet sense 3 (markedly new or introducing radical change):

radical

WordNet sense 4 (not of long duration; having just (or relatively recently) come into being or been made or acquired or discovered):

new