Synonyms|341Antonyms|3|Broader|2Narrower|3Related|106

57 entries under base topic. ×

9
foundation(noun, beginning, source, essential)
9
mainstay(noun, support, essential, foundation)
8
cornerstone(noun, idea, element, foundation)
8
backbone(noun, support, action, beginning)
8
basis(noun, law, regulation, action, idea)
8
headstone(noun, gravestone)
8
principle(noun, support, action, idea)
5
core(noun, support, action, idea)
5
essence(noun, support, action, idea)
5
fundamental(noun, law, support, regulation, action)
5
heart(noun, support, action, idea)
5
support(noun, action, beginning, source)
3
keynote(noun, law, support, regulation, action)
3
root(noun, support, action, idea)
3
wedge(noun, block, basis, segment)
2
crux(noun, support, action, idea)
2
essential(noun, support, action, beginning)
2
bedrock(noun, support, action, beginning)
2
crown
2
data(noun, support, action, beginning)
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APASmart Define. (2015). keystone thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/keystone/thesaurus/synonyms
ChicagoSmart Define. 2015. "keystone thesaurus" https://smartdefine.org/keystone/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, keystone thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/keystone/thesaurus/synonyms>.
MLASmart Define. "keystone thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/keystone/thesaurus/synonyms>