90 entries under beginning topic. ×

6
inception(noun, cause, top, base)
6
rudiment(noun, support, action, cause, start)
5
bedrock(noun, support, action, cause, reason)
5
crux(noun, support, action, quality, cause)
4
commencement(noun, cause, start, top)
4
occasion(noun, cause, reason, object, base)
4
rise(noun, cause, start, top)
4
start(noun, verb, form, fix, cause)
4
substratum(noun, support, action, cause, reason)
4
support(noun, verb, organization, action, praise)
4
underpinning(noun, organization, support, action, cause)
4
wellspring(noun, cause, start, well)
3
determinant(noun, cause, reason, object, base)
3
element(noun, feature, drop, part, quality)
3
fundamental(noun, adjective, support, action, drop)
3
inspiration(noun, cause, influence, reason, object)
3
mainspring(noun, cause, reason, idea, object)
3
outset(noun, cause, start, top)
2
action(noun, support, cause, base)
2
author(noun, person, cause, reason, base)
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APASmart Define. (2016). root thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/root/thesaurus/synonyms
ChicagoSmart Define. 2016. "root thesaurus" https://smartdefine.org/root/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, root thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/root/thesaurus/synonyms>.
MLASmart Define. "root thesaurus" 2 March 2016. Web. 22 September 2026. <https://smartdefine.org/root/thesaurus/synonyms>