10
crazy(noun, adjective, enthusiastic, ill, sick)
6
extremist(noun, adjective, belief, enthusiastic, ill)
5
radical(noun, adjective, person, enthusiastic, ill)
5
ultra(noun, adjective, enthusiastic, ill, sick)
4
fanatic(noun, interest, radical, rebel, progressive)
4
rabid(adjective, violent, ill, sick, angry)
4
revolutionist(noun, radical, fanatic, zealot, extremist)
2
extreme(adjective, enthusiastic, ill, sick, fervent)
2
fanatical(adjective, enthusiastic, ill, sick, fervent)
2
red
2
revolutionary(noun, adjective, enthusiastic, ill, sick)
1
activist(noun, radical, fanatic, freak, revolutionary)
1
agitator(noun, radical, rebel, fanatic, progressive)
1
anarchist
1
anarchistic
1
berserk(adjective, enthusiastic, ill, sick, fervent)
1
bigot(noun, radical, freak, visionary, zealot)
1
bigoted(adjective, enthusiastic, ill, sick, fervent)
1
bitten(adjective, enthusiastic, ill, sick, fervent)
1
corybantic(adjective, enthusiastic, ill, sick, fervent)
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APASmart Define. (2015). ultraist thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/ultraist/thesaurus/synonyms
ChicagoSmart Define. 2015. "ultraist thesaurus" https://smartdefine.org/ultraist/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, ultraist thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/ultraist/thesaurus/synonyms>.
MLASmart Define. "ultraist thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/ultraist/thesaurus/synonyms>