86 entries under reason topic. ×
| origin(noun, person, body, cause, start) | |
| source(noun, support, action, person, cause) | |
| base(noun, verb, organization, form, support) | |
| basis(noun, support, action, drop, part) | |
| cause(noun, support, action, person, cause) | |
| beginning(noun, action, cause, start, point) | |
| foundation(noun, organization, support, body, cause) | |
| motive(noun, cause, idea, object) | |
| seat(noun, support, place, cause) | |
| footing(noun, organization, support, action, cause) | |
| antecedent(noun, support, action, cause) | |
| ground(noun, verb, form, support, cause) | |
| grounds(noun, cause, substance, object) | |
| infrastructure(noun, organization, support, action, cause) | |
| spring(noun, cause, start, top, point) | |
| factor(noun, drop, part, cause) | |
| genesis(noun, cause, start, top) | |
| bedrock(noun, support, action, cause) | |
| occasion(noun, cause, object, base) | |
| substratum(noun, support, action, cause) |
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| APA | Smart Define. (2016). root thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/root/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "root thesaurus" https://smartdefine.org/root/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, root thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/root/thesaurus/synonyms>. |
| MLA | Smart Define. "root thesaurus" 2 March 2016. Web. 20 September 2026. <https://smartdefine.org/root/thesaurus/synonyms> |