430 entries under noun topic. ×

26
origin(person, body, cause, start)
25
source(support, action, person, cause)
15
base(verb, organization, form, support)
15
basis(support, action, drop, part)
15
cause(support, action, person, cause)
14
parent(person, cause, start, point)
13
beginning(action, cause, start, point)
13
stem(drop, part, cause, base)
12
core(support, action, place, quality)
12
foundation(organization, support, body, cause)
11
motive(cause, reason, idea, object)
10
essence(support, action, place, cause)
10
heart(support, action, place, part)
9
fount(cause, start, point, well)
9
germ(quality, cause, character, spirit)
9
place(verb, form, set, start)
9
seat(support, place, cause, reason)
8
footing(organization, support, action, cause)
8
antecedent(support, action, cause, reason)
8
bottom(verb, adjective, support, quality)
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APASmart Define. (2016). root thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/root/thesaurus/synonyms
ChicagoSmart Define. 2016. "root thesaurus" https://smartdefine.org/root/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, root thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/root/thesaurus/synonyms>.
MLASmart Define. "root thesaurus" 2 March 2016. Web. 21 September 2026. <https://smartdefine.org/root/thesaurus/synonyms>