- Definitions|2
- Thesaurus|472
- Abbreviations|0
| principle(noun, support, action, base, beginning) | |
| seat(noun, support, cause, start, reason) | |
| stage(support, layer) | |
| support(noun, support, action, substance, authority) | |
| underpinning(noun, support, action, hold, cause) | |
| course(noun, layer) | |
| layer(noun, layer, coating, tier) | |
| material(noun, materiality) | |
| stratum(noun, layer) | |
| body(noun, materiality, substantiality) | |
| brute matter(expression, idiom, materiality) | |
| core(noun, support, action, cause, start) | |
| deck | |
| earth | |
| fundamental(noun, adjective, support, action, cause) | |
| hardpan | |
| hypostasis | |
| materiality | |
| pavement | |
| rest(noun, support, hold, block, back) |
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| APA | Smart Define. (2015). substratum thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/substratum/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "substratum thesaurus" https://smartdefine.org/substratum/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, substratum thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/substratum/thesaurus/synonyms>. |
| MLA | Smart Define. "substratum thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/substratum/thesaurus/synonyms> |