10 entries under bottom topic. ×

15
fundamental(adjective, clear, simple, plain, pure)
8
basic(adjective, simple, base, pure, important)
7
elementary(adjective, simple, pure, important, straightforward)
7
underlying(adjective, simple, base, important, straightforward)
6
bottom(adjective, important, significant, original, basic)
2
base(adjective, last)
2
lowest(adjective, base, last)
1
lowermost(adjective, base, last)
1
nethermost(adjective, base, last)
1
undermost(adjective, base, last)
11 years ago|3k views|share |citing 
APASmart Define. (2015). foundational thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/foundational/thesaurus/synonyms
ChicagoSmart Define. 2015. "foundational thesaurus" https://smartdefine.org/foundational/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, foundational thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/foundational/thesaurus/synonyms>.
MLASmart Define. "foundational thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/foundational/thesaurus/synonyms>