revolutionary
adjective
1. markedly new or introducing radical change
- a revolutionary discovery
2. of or relating to or characteristic or causing an axial or orbital turn
Similar word(s): rotatory
3. relating to or having the nature of a revolution
- revolutionary wars
- the Revolutionary era
4. advocating or engaged in revolution
- revolutionary pamphlets
- a revolutionary junta
noun
1. a radical supporter of political or social revolution
Similar word(s): revolutionist, subversive, subverter