128 entries under source topic. ×

1
footing(noun, cause, start, position, reason)
1
fountain(cause, origin, derivation)
1
fountainhead(cause, origin)
1
germ(cause, origin, derivation)
1
groundwork(cause, reason, basis, justification)
1
inception(cause, origin, derivation)
1
infrastructure(cause, reason, basis, justification)
1
inspiration(noun, cause, influence, reason, object)
1
launch(noun, verb, make, open, cause)
1
mainspring(noun, cause, start, reason, object)
1
nucleus(cause, origin, derivation)
1
object(noun, help, cause, benefit, reason)
1
originator(noun, reason, element, matter)
1
prime mover(noun, expression, reason, element, matter)
1
producer(noun, cause, influence, reason, base)
1
provenance(cause, origin, derivation)
1
provenience(noun, cause, origin, derivation)
1
rock bottom(expression, cause, origin)
1
seat(cause, reason, basis, justification)
1
seed(cause, origin, derivation)
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APASmart Define. (2016). occasion thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/occasion/thesaurus/synonyms
ChicagoSmart Define. 2016. "occasion thesaurus" https://smartdefine.org/occasion/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, occasion thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/occasion/thesaurus/synonyms>.
MLASmart Define. "occasion thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/occasion/thesaurus/synonyms>