Synonyms|602Antonyms|43|Broader|23Narrower|8Related|156

68 entries under essential topic. ×

45
core(noun, support, action, place, quality)
34
heart(noun, support, action, place, part)
22
essence(noun, support, action, place, cause)
11
crux(noun, support, action, quality, body)
11
center(noun, support, action, place, body)
8
root(noun, support, action, place, quality)
7
principle(noun, support, action, quality, cause)
6
nexus(noun, support, action, point, base)
4
premise(noun, support, action, base, beginning)
4
spirit(noun, quality, character, substance, idea)
3
quiddity(noun, quality, character, spirit, significance)
3
base(noun, support, action, quality, body)
3
fundamental(noun, support, action, cause, start)
3
keynote(noun, support, action, substance, idea)
3
rudiment(noun, support, action, cause, base)
2
axiom(noun, support, action, base, beginning)
2
backbone(noun, support, action, quality, character)
2
keystone(noun, support, action, base, importance)
2
postulate(noun, support, action, base, beginning)
2
source(noun, support, action, cause, start)
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APASmart Define. (2015). nucleus thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/nucleus/thesaurus/synonyms
ChicagoSmart Define. 2015. "nucleus thesaurus" https://smartdefine.org/nucleus/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, nucleus thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/nucleus/thesaurus/synonyms>.
MLASmart Define. "nucleus thesaurus" 24 December 2015. Web. 23 September 2026. <https://smartdefine.org/nucleus/thesaurus/synonyms>