158 entries under source topic. ×
| foundation(noun, organization, concept, law, support) | |
| base(noun, organization, concept, support, action) | |
| cause(noun, action, cause, start, reason) | |
| ground(noun, law, support, cause, start) | |
| root(noun, support, action, drop, part) | |
| groundwork(noun, organization, support, study, area) | |
| reason(noun, action, cause, start, substance) | |
| principle(noun, concept, law, action, drop) | |
| footing(noun, support, action, cause, start) | |
| bottom(noun, support, quality, cause, start) | |
| core(noun, organization, action, area, quality) | |
| justification(noun, action, cause, reason, substance) | |
| evidence(noun, law, action, cause, reason) | |
| grounds(noun, concept, understanding, philosophy, cause) | |
| fundamental(noun, law, regulation, action, drop) | |
| heart(noun, law, action, quality, cause) | |
| origin(noun, law, body, cause, start) | |
| substratum(noun, support, action, cause, start) | |
| underpinning(noun, support, action, cause, start) | |
| bedrock(noun, support, action, cause, start) |
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| APA | Smart Define. (2015). basis thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/basis/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "basis thesaurus" https://smartdefine.org/basis/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, basis thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/basis/thesaurus/synonyms>. |
| MLA | Smart Define. "basis thesaurus" 22 December 2015. Web. 20 September 2026. <https://smartdefine.org/basis/thesaurus/synonyms> |