52 entries under questionable topic. ×
| chancy(adjective, clear, delicate, certain, uncertain) | |
| debatable(adjective, open, uncertain, doubtful, dubious) | |
| iffy(adjective, clear, open, delicate, informal) | |
| disputable(adjective, uncertain, doubtful, dubious, suspect) | |
| inconclusive(adjective, clear, certain, uncertain, doubtful) | |
| insecure(adjective, delicate, uncertain, nervous, unstable) | |
| uneasy(uncertain, shaky, unclear, unlikely) | |
| contingent(adjective, delicate, uncertain, unstable, doubtful) | |
| dicey(adjective, delicate, uncertain, unstable, doubtful) | |
| disreputable(uncertain, shaky, vague, unclear, ambiguous) | |
| doubtable(uncertain, doubtful, shaky, dubious, unclear) | |
| far-fetched(uncertain, shaky, unclear, unlikely) | |
| fat chance(expression, uncertain, shaky, unclear, unlikely) | |
| fishy(uncertain, shaky, vague, dubious, unclear) | |
| hazardous(adjective, delicate, uncertain, unstable, doubtful) | |
| hazy(uncertain, shaky, vague, unclear, ambiguous) | |
| impugnable(adjective, delicate, uncertain, unstable, doubtful) | |
| long shot(expression, uncertain, shaky, unclear, unlikely) | |
| obscure(uncertain, shaky, vague, unclear, ambiguous) | |
| on thin ice(expression, adjective, idiom, delicate, uncertain) |
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| APA | Smart Define. (2015). borderline thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/borderline/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "borderline thesaurus" https://smartdefine.org/borderline/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, borderline thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/borderline/thesaurus/synonyms>. |
| MLA | Smart Define. "borderline thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/borderline/thesaurus/synonyms> |