107 entries under start topic. ×

5
fountainhead(noun, person, cause, rise)
5
head(noun, beginning, opening, introduction)
5
launching(noun, beginning, impregnation, fertilization)
5
mainspring(noun, verb, cause, reason)
5
nascence(noun, birth)
4
core(noun, cause, base, beginning)
4
day one(noun, expression, cause, top)
4
kickoff(noun, top, base, beginning)
4
outbreak(noun, cause, beginning, source)
4
square one(noun, expression, cause, top)
3
formation(noun, beginning, birth, dawn)
3
founding
3
reason(noun, regulation, cause, base)
3
rootstock(noun, point)
2
arrival(beginning, commencement)
2
fundamental(noun, adjective, law, regulation, cause)
2
takeoff(noun, top, beginning, opening)
1
advent
1
ground(noun, law, regulation, cause)
1
instigation(noun, reason, matter, opening)
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APASmart Define. (2015). origin thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/origin/thesaurus/synonyms
ChicagoSmart Define. 2015. "origin thesaurus" https://smartdefine.org/origin/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, origin thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/origin/thesaurus/synonyms>.
MLASmart Define. "origin thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/origin/thesaurus/synonyms>