89 entries under original topic. ×

5
elementary(adjective, important, significant, essential)
5
foundational(adjective, base, important, significant, last)
5
primordial(adjective, cause, important, significant)
4
bottom(adjective, important, significant, essential)
4
deep(adjective, spread, unusual, fantastic)
4
elemental(adjective, important, significant, essential)
4
groundbreaking(adjective, new, advanced, pioneering)
4
main(importance, important, significant, essential)
4
maverick(noun, adjective, person, beat)
4
paramount(adjective, importance, important, significant)
4
rudimentary(adjective, important, significant, essential)
3
crucial(adjective, great, important, significant)
3
iconoclast(noun, person, liberal, rebel)
3
individualist(noun, adjective, liberal, rebel)
3
major(adjective, great, important, significant)
3
visionary(noun, adjective, violent, fervent)
2
beatnik(noun, liberal, rebel, beliefs)
2
constitutive(important, basic, vital, primary)
2
demonstrator(noun, liberal, rebel, beliefs)
2
dissentient(adjective, liberal, rebel, beliefs)
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APASmart Define. (2016). radical thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/radical/thesaurus/synonyms
ChicagoSmart Define. 2016. "radical thesaurus" https://smartdefine.org/radical/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, radical thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/radical/thesaurus/synonyms>.
MLASmart Define. "radical thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/radical/thesaurus/synonyms>