- Definitions|1
- Thesaurus|340
- Abbreviations|0
| splendid(pure, flawless, faultless, textbook, superlative) | |
| spotless(correct, clean, perfect, pure, splendid) | |
| stainless(correct, clean, perfect, pure, splendid) | |
| sublime(pure, splendid, flawless, faultless, textbook) | |
| supreme(correct, clean, perfect, pure, flawless) | |
| surefire | |
| tamperproof | |
| ten(pure, splendid, flawless, faultless, textbook) | |
| tight | |
| tractable | |
| true(flawless, faultless, textbook) | |
| unblemished(correct, clean, perfect, pure, splendid) | |
| unending | |
| unequaled(pure, splendid, flawless, faultless, textbook) | |
| unflagging | |
| unflawed(adjective, perfect, flawless, faultless, textbook) | |
| unimpeachable | |
| unmarred(pure, splendid, flawless, faultless, textbook) | |
| untainted(pure, splendid, flawless, faultless, textbook) | |
| untarnished(pure, splendid, flawless, faultless, textbook) |
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| APA | Smart Define. (2015). foolproof thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/foolproof/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "foolproof thesaurus" https://smartdefine.org/foolproof/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, foolproof thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/foolproof/thesaurus/synonyms>. |
| MLA | Smart Define. "foolproof thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/foolproof/thesaurus/synonyms> |