- Definitions|2
- Thesaurus|770
- Abbreviations|0
| straight out(expression, definite, precise, sure, decisive) | |
| suggestive | |
| surefire(adjective, solid, certain, sure, confident) | |
| symptomatic | |
| testable | |
| true(clear, sound, reasonable, certain, absolute) | |
| trusting(adjective, certain) | |
| trustworthy(clear, sound, reasonable, rational, valid) | |
| ultimate(sound, reasonable, rational, definite, precise) | |
| unchallengeable | |
| unchallenged | |
| unconditional(adjective, definite, precise, sure, decisive) | |
| unconfutable | |
| uncontestable | |
| unrefutable | |
| verifiable | |
| watertight | |
| well-founded(sound, reasonable, rational, absolute, indisputable) | |
| well-grounded(sound, reasonable, rational, absolute, indisputable) | |
| what you see is what you get(expression, idiom, definite, precise, sure) |
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| APA | Smart Define. (2015). irrefutable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/irrefutable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "irrefutable thesaurus" https://smartdefine.org/irrefutable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, irrefutable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/irrefutable/thesaurus/synonyms>. |
| MLA | Smart Define. "irrefutable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/irrefutable/thesaurus/synonyms> |