5
elementary(adjective, important, significant, original, essential)
5
fab(job, amazing, astonishing, very best kind, astounding)
5
fantastic(unusual, job, amazing, neat, groovy)
5
first-rate(job, very best kind)
5
foundational(adjective, base, important, significant, last)
5
group
5
iconoclastic(adjective, skeptical, unorthodox, extremes)
5
irrational(adjective, severe, harsh, exceptional, ill)
5
keen(adjective, enthusiastic, job, ill, sick)
5
left-winger(noun, person, liberal, revolutionary, leftist)
5
neat(unusual, job, fantastic, groovy, very best kind)
5
nifty(unusual, job, fantastic, neat, groovy)
5
noble(job, very best kind)
5
out-and-out
5
primordial(adjective, cause, important, significant, original)
5
profound(adjective, basic, fundamental)
5
radix
5
renegade(noun, adjective, person, reactionary, insurgent)
5
root word(noun, expression, idiom)
5
stellar(great, important, job, serious, very best kind)
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APASmart Define. (2016). radical thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/radical/thesaurus/synonyms
ChicagoSmart Define. 2016. "radical thesaurus" https://smartdefine.org/radical/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, radical thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/radical/thesaurus/synonyms>.
MLASmart Define. "radical thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/radical/thesaurus/synonyms>