Synonyms|256Antonyms|65|Broader|1Narrower|0Related|245

45 entries under important topic. ×

23
fundamental(adjective, simple, plain, straightforward)
22
basic(adjective, simple, plain, base)
20
essential(adjective, simple, plain, significant)
15
primary(adjective, simple, plain, base)
15
elementary(adjective, simple, plain, significant)
13
elemental(adjective, simple, plain, significant)
11
cardinal(noun, adjective, significant, original)
9
radical(adjective, base, significant, last)
9
rudimentary(adjective, simple, plain, significant)
8
basal(adjective, simple, plain, base)
8
intrinsic(adjective, significant, original, essential)
8
primitive(adjective, simple, plain, significant)
7
bottom(noun, adjective, significant, original)
7
prime(adjective, significant, original, essential)
7
principal(adjective, significant, original, essential)
6
crucial(adjective, significant, original, essential)
6
foundational(adjective, simple, plain, base)
6
vital(adjective, top, significant, original)
5
original(adjective, simple, plain, significant)
4
central(adjective, top, significant, original)
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APASmart Define. (2015). underlying thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/underlying/thesaurus/synonyms
ChicagoSmart Define. 2015. "underlying thesaurus" https://smartdefine.org/underlying/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, underlying thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/underlying/thesaurus/synonyms>.
MLASmart Define. "underlying thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/underlying/thesaurus/synonyms>