45
core(noun, support, action, place, quality)
34
heart(noun, support, action, place, part)
30
focus(noun, center, centre, place, quick)
23
pith(noun, place, quality, body, cause)
22
essence(noun, support, action, place, cause)
19
hub(noun, support, place, point, emotion)
18
kernel(noun, place, quality, body, start)
16
nub(noun, quality, body, cause, start)
15
gist(noun, place, body, substance, idea)
13
meat(noun, quality, body, character, spirit)
13
marrow(noun, place, quality, cause, start)
12
pivot(noun, support, place, body, point)
12
centre
11
crux(noun, support, action, quality, body)
11
middle(noun, place, body, substance, emotion)
11
center(noun, support, action, place, body)
10
germ(noun, quality, cause, start, character)
10
substance(noun, quality, body, cause, start)
8
midst(noun, core, center, middle, target)
8
nave(noun, center, middle, target, centrality)
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APASmart Define. (2015). nucleus thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/nucleus/thesaurus/synonyms
ChicagoSmart Define. 2015. "nucleus thesaurus" https://smartdefine.org/nucleus/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, nucleus thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/nucleus/thesaurus/synonyms>.
MLASmart Define. "nucleus thesaurus" 24 December 2015. Web. 22 September 2026. <https://smartdefine.org/nucleus/thesaurus/synonyms>