383 entries under noun topic. ×

23
core(adjective, organization, support, action)
21
heart(support, action, part, quality)
19
essence(organization, support, action, area)
17
pith(organization, area, part, quality)
13
enigma(trouble, challenge, question, secret)
13
gist(organization, area, part, strength)
13
nub(part, quality, body, cause)
12
kernel(part, quality, character, strength)
12
meat(part, quality, character, strength)
12
substance(organization, area, part, quality)
10
point(support, quality, pass, character)
9
nucleus(support, action, quality, body)
8
marrow(quality, cause, start, character)
7
crisis(trouble, pass, point, difficulty)
7
basis(organization, action, area, quality)
7
problem(trouble, difficulty, burden, challenge)
7
puzzle(trouble, change, difficulty, challenge)
7
thrust(part, body, strength, idea)
6
gravamen(organization, area, strength, material)
6
mystery(trouble, difficulty, challenge, question)
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APASmart Define. (2015). crux thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/crux/thesaurus/synonyms
ChicagoSmart Define. 2015. "crux thesaurus" https://smartdefine.org/crux/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, crux thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/crux/thesaurus/synonyms>.
MLASmart Define. "crux thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/crux/thesaurus/synonyms>