128 entries under cause topic. ×
| seat(source, basis, justification, origin) | |
| song and dance(noun, expression, idiom, action) | |
| sour grapes(noun, expression, action, explanation) | |
| starting point(noun, expression, start, base) | |
| straight stuff(noun, expression, information, base) | |
| testimony(noun, information, base, call) | |
| trial(noun, base, call, element) | |
| whatfor(noun, action, plan, desire) | |
| beginnings(source, origin) | |
| emotion(noun, feeling, object, purpose) | |
| essentiality(source, origin) | |
| fountain(source, origin) | |
| fountainhead(source, origin) | |
| germ(source, origin) | |
| inception(source, origin) | |
| obligation(noun, claim, need, ground) | |
| provenance(source, origin) | |
| provenience(source, origin) | |
| quick(source, origin) | |
| radicle(source, origin) |
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| APA | Smart Define. (2016). reason thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/reason/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "reason thesaurus" https://smartdefine.org/reason/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, reason thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/reason/thesaurus/synonyms>. |
| MLA | Smart Define. "reason thesaurus" 25 February 2016. Web. 23 September 2026. <https://smartdefine.org/reason/thesaurus/synonyms> |