37 entries under fundamental topic. ×

16
chief(adjective, top, excellent, superior, important)
8
ideal(adjective, characteristic, excellent, perfect, important)
7
essential(adjective, characteristic, important, common, ordinary)
3
prime(adjective, fine, model, significant, standard)
2
perfect(adjective, excellent, fine, model, basic)
1
absolute(adjective, excellent, perfect, model, basic)
1
all-important(adjective, significant, essential, basic, vital)
1
basic(adjective, important, significant, essential, vital)
1
binding(adjective, significant, essential, basic, vital)
1
bottom-line(adjective, significant, essential, basic, vital)
1
cardinal(adjective, significant, essential, basic, vital)
1
compelling(adjective, significant, essential, basic, vital)
1
complete(adjective, excellent, perfect, model, basic)
1
compulsory(adjective, significant, essential, basic, vital)
1
de rigueur(expression, adjective, significant, essential, basic)
1
decisive(adjective, important, significant, essential, basic)
1
elementary(adjective, significant, essential, basic, vital)
1
exigent(adjective, significant, essential, basic, vital)
1
expedient(adjective, significant, essential, basic, vital)
1
imperative(adjective, significant, essential, basic, vital)
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APASmart Define. (2016). quintessential thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/quintessential/thesaurus/synonyms
ChicagoSmart Define. 2016. "quintessential thesaurus" https://smartdefine.org/quintessential/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, quintessential thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/quintessential/thesaurus/synonyms>.
MLASmart Define. "quintessential thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/quintessential/thesaurus/synonyms>