revolutionary
noun
a radical supporter of political or social revolution
adjective
markedly new or introducing radical change
“a revolutionary discovery”
“radical political views”
Synonymsradicalof or relating to or characteristic or causing an axial or orbital turn
Synonymsrotatoryrelating to or having the nature of a revolution
“revolutionary wars”
“the Revolutionary era”
advocating or engaged in revolution
“revolutionary pamphlets”
“a revolutionary junta”
Oppositescounterrevolutionary
Source: WordNet 3.1, Princeton University