- Definitions|2
- Thesaurus|2.2k
- Abbreviations|0
179 entries under noun topic. ×
| principium(law, regulation, part, rule) | |
| rock bottom(expression, part, cause, quick) | |
| root(adjective, support, action, drop) | |
| absolute(adjective, rule, certain, essential) | |
| assumption(law, support, regulation, action) | |
| essence(support, action, cause, start) | |
| fundamental frequency(expression, idiom) | |
| gist | |
| grounds | |
| guts(part, informal, condition, essence) | |
| ingredient(drop, part, material, essential) | |
| keystone(law, support, regulation, action) | |
| must(condition, need, essential, certainty) | |
| part and parcel(expression, adjective, idiom, characteristic) | |
| particular(drop, part, material, essential) | |
| requirement(concern, demand, need, essential) | |
| ABCs(adjective, part, simple, plain) | |
| bottom line(expression, part, condition, essence) | |
| brass tacks(expression, part, condition, essence) | |
| cause(support, regulation, action, start) |
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| APA | Smart Define. (2016). fundamental thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/fundamental/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fundamental thesaurus" https://smartdefine.org/fundamental/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, fundamental thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/fundamental/thesaurus/synonyms>. |
| MLA | Smart Define. "fundamental thesaurus" 29 March 2016. Web. 30 September 2026. <https://smartdefine.org/fundamental/thesaurus/synonyms> |