revolutionary
rev-o-lu-tion-a-ry
adjective
Involving or causing a complete, dramatic, and fundamental change or innovation.
"Her new theory was truly revolutionary."
noun
A person who advocates or participates in a political or social revolution.
"He joined the revolutionaries fighting for change."
Thesaurus
Synonyms: new, radical, rotatory, revolutionist, subverter, subversive
Antonyms: counterrevolutionary