132 entries under doubtful topic. ×
| open(adjective, uncertain, nervous, unstable) | |
| suspect(uncertain, shaky, dubious, tricky) | |
| tentative(adjective, open, uncertain, vague) | |
| touch and go(expression, adjective, idiom, delicate, uncertain) | |
| undetermined(open, uncertain, vague, dubious) | |
| unforeseeable(vague, changeable, unsure, erratic) | |
| up in the air(expression, adjective, idiom, open, uncertain) | |
| vacillating(adjective, uncertain, nervous, vague) | |
| wobbly(adjective, uncertain, nervous, unstable) | |
| ambivalent(open, vague, hesitant, unsure) | |
| betwixt and between(expression, adjective, idiom, open, uncertain) | |
| changeable(adjective, uncertain, irregular, vague) | |
| diffident(uncertain, nervous, insecure, unsure) | |
| dynamite(adjective, delicate, uncertain, unstable) | |
| enigmatic(uncertain, dubious, tricky, sticky) | |
| far-fetched(uncertain, shaky, unsure, unlikely) | |
| fitful(adjective, uncertain, unstable, irregular) | |
| hanging by a thread(expression, adjective, idiom, delicate, uncertain) | |
| hazy(shaky, vague, unsure, unlikely) | |
| hesitant(adjective, open, uncertain, vague) |
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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> |