89 entries under primary topic. ×

1
bottom(adjective, important, significant, essential, basic)
1
bottom-line(important, significant, basic, vital, fundamental)
1
critical(fast, fundamental)
1
deep-seated(characteristic, essential, basic, intrinsic)
1
grass-roots(adjective, important, significant, essential, basic)
1
leading(adjective, order, heavy, head, beginning)
1
least(adjective, head, beginning, opening, prime)
1
major(adjective, important, significant, essential, basic)
1
meat-and-potatoes(adjective, important, significant, fresh, essential)
1
necessary(adjective, body, material, important, significant)
1
preeminent(order, extraordinary, superior, heavy, fantastic)
1
previous(adjective, last, first, other)
1
requisite(adjective, important, significant, essential, basic)
1
significant(adjective, important, essential, basic, vital)
1
slightest(adjective, head, beginning, opening, prime)
1
smallest(adjective, head, beginning, opening, prime)
1
substrative(adjective, important, significant, essential, basic)
1
supporting(adjective, important, significant, essential, basic)
1
sustaining(adjective, important, significant, essential, basic)
1
theoretical(adjective, obscure, extraordinary, superior, important)
10 years ago|34k views|share |citing 
APASmart Define. (2016). original thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/original/thesaurus/synonyms
ChicagoSmart Define. 2016. "original thesaurus" https://smartdefine.org/original/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, original thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/original/thesaurus/synonyms>.
MLASmart Define. "original thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/original/thesaurus/synonyms>