a person who favours or resorts to immoderate, uncompromising, or fanatical methods or behaviour, esp in being politically radical
of, relating to, or characterized by immoderate or excessive actions, opinions, etc
WordReference Random House Unabridged Dictionary of American English © 2026
ex•trem•ist
(ik strē′mist),USA pronunciation n.
adj.
- Governmenta person who goes to extremes, esp. in political matters.
- Governmenta supporter or advocate of extreme doctrines or practices.
adj.
- Governmentbelonging or pertaining to extremists.
- extreme + -ist 1840–50
Collins Concise English Dictionary © HarperCollins Publishers::
'extremist' also found in these entries (note: many are not synonyms or translations):
Gandhi
- National Front
- bonnet rouge
- cult
- out-and-outer
- rad-lib
- radical
- sansculotte
- ultra
- ultraism
- zealot