134 entries under uncertain topic. ×
| unsound(adjective, delicate, sensitive, risky) | |
| variable(adjective, irregular, doubtful, vague) | |
| weak(adjective, nervous, doubtful, insecure) | |
| arguable(doubtful, dubious, tricky, questionable) | |
| on thin ice(expression, adjective, idiom, delicate) | |
| open(adjective, nervous, unstable, doubtful) | |
| suspect(doubtful, shaky, dubious, tricky) | |
| tentative(adjective, open, doubtful, vague) | |
| touch and go(expression, adjective, idiom, delicate) | |
| undetermined(open, doubtful, vague, dubious) | |
| up in the air(expression, adjective, idiom, open) | |
| vacillating(adjective, nervous, doubtful, vague) | |
| volatile(adjective, unusual, unstable, irregular) | |
| wobbly(adjective, nervous, unstable, doubtful) | |
| betwixt and between(expression, adjective, idiom, open) | |
| changeable(adjective, irregular, doubtful, vague) | |
| diffident(nervous, doubtful, insecure, unsure) | |
| dynamite(adjective, delicate, unstable, doubtful) | |
| endangered(delicate, sensitive, unsound, tricky) | |
| enigmatic(doubtful, dubious, tricky, sticky) |
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| APA | Smart Define. (2015). iffy thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/iffy/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "iffy thesaurus" https://smartdefine.org/iffy/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, iffy thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/iffy/thesaurus/synonyms>. |
| MLA | Smart Define. "iffy thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/iffy/thesaurus/synonyms> |