106 entries under clear topic. ×
| constant(adjective, set, honest, pure) | |
| convinced(certain, definite, positive, confident) | |
| deducible(sound, reasonable, sensible, rational) | |
| discerning(sound, reasonable, sensible, rational) | |
| discriminating(sound, reasonable, sensible, rational) | |
| doubtless(certain, definite, positive, confident) | |
| evident(physical, material, actual, undoubtable) | |
| extensional(sound, reasonable, sensible, rational) | |
| for a fact(expression, idiom, certain, definite) | |
| guaranteed(certain, unquestionable, approved, confirmed) | |
| infallible(complete, certain, sure, unquestionable) | |
| inferential(sound, reasonable, sensible, rational) | |
| juridicious(sound, reasonable, sensible, rational) | |
| known(adjective, simple, firm, true) | |
| momentous(adjective, effective, forceful, expressive) | |
| most likely(expression, sound, reasonable, sensible) | |
| necessary(sound, reasonable, sensible, rational) | |
| obvious(sound, reasonable, sensible, rational) | |
| perspicuous(sound, reasonable, sensible, rational) | |
| plain(honest, true, straight, real) |
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| APA | Smart Define. (2016). valid thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/valid/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "valid thesaurus" https://smartdefine.org/valid/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, valid thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/valid/thesaurus/synonyms>. |
| MLA | Smart Define. "valid thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/valid/thesaurus/synonyms> |