- Definitions|0
- Thesaurus|189
- Abbreviations|0
| faultless(adjective, pure) | |
| fetal | |
| first(adjective, important, significant, opening, original) | |
| foundation | |
| grass-roots(adjective, important, significant, original, essential) | |
| ground(adjective, base, last) | |
| guiltless(adjective, pure) | |
| honorable(adjective, pure) | |
| immaculate(adjective, pure) | |
| inceptive | |
| inchoate | |
| indispensable(adjective, important, significant, original, basic) | |
| indivisible(adjective, pure) | |
| infant | |
| infantile | |
| initiative | |
| initiatory | |
| innocent(adjective, pure) | |
| integral(adjective, important, significant, original, essential) | |
| intrinsic(adjective, important, significant, original, basic) |
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| APA | Smart Define. (2015). foundational thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/foundational/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "foundational thesaurus" https://smartdefine.org/foundational/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, foundational thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/foundational/thesaurus/synonyms>. |
| MLA | Smart Define. "foundational thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/foundational/thesaurus/synonyms> |