- Definitions|0
- Thesaurus|343
- Abbreviations|0
| complacent(certain, sure, guaranteed) | |
| composed(certain, sure, guaranteed) | |
| conclusive(certain, unquestionable, undisputable) | |
| consequence(noun, trust, confidence, stock, inevitability) | |
| consistent | |
| constant(certain, reliable, trustworthy, unquestionable, undisputable) | |
| convinced(certain, unquestionable, undisputable) | |
| convincing(certain, unquestionable, undisputable) | |
| cool(certain, sure, guaranteed) | |
| decisive | |
| definitive | |
| determination(assurance, certainty, conviction) | |
| direct | |
| doubtless(certain, unquestionable, undisputable) | |
| enduring(certain, reliable, trustworthy, unquestionable, undisputable) | |
| exact | |
| explicit | |
| fail-safe | |
| faultless | |
| favorable |
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| APA | Smart Define. (2015). surefire thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/surefire/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "surefire thesaurus" https://smartdefine.org/surefire/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, surefire thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/surefire/thesaurus/synonyms>. |
| MLA | Smart Define. "surefire thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/surefire/thesaurus/synonyms> |