132 entries under doubtful topic. ×
| impracticable(unlikely, implausible) | |
| inconceivable(unlikely, implausible) | |
| incredible(unlikely, implausible) | |
| out on limb(expression, idiom, delicate, uncertain) | |
| perplexed(uncertain, unsure) | |
| questioning(uncertain, nervous, insecure, unsure) | |
| rare(unlikely, implausible) | |
| reluctant(uncertain, unsure) | |
| unapt | |
| unbelievable(unlikely, implausible) | |
| unimaginable(unlikely, implausible) | |
| unresolved(open, uncertain, vague, unsure) |
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| APA | Smart Define. (2015). iffy thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/iffy/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "iffy thesaurus" https://smartdefine.org/iffy/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, iffy thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/iffy/thesaurus/synonyms>. |
| MLA | Smart Define. "iffy thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/iffy/thesaurus/synonyms> |