- Definitions|1
- Thesaurus|1.7k
- Abbreviations|0
| unimaginable | |
| unresolved | |
| unsettled | |
| unstable(uncertain, shaky, unclear, unlikely, questionable) | |
| unthinkable | |
| up for grabs(uncertain, doubtful, shaky, unclear, risky) | |
| dependent | |
| different(dubious, suspect, shady) | |
| doubter | |
| farfetched(dubious, suspect, shady) | |
| in doubt(expression, uncertain, doubtful, shaky, unlikely) | |
| inconsistent | |
| issuable | |
| not kosher(expression, dubious, suspect, shady) | |
| odd(adjective, irregular, doubtful, dubious, suspicious) | |
| open discussion | |
| open to doubt(expression, idiom, dubious, suspect, shady) | |
| out of line(expression, idiom, dubious, suspect, shady) | |
| overt(dubious, suspect, shady) | |
| peculiar(dubious, suspect, shady) |
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| APA | Smart Define. (2015). doubtable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/doubtable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "doubtable thesaurus" https://smartdefine.org/doubtable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, doubtable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/doubtable/thesaurus/synonyms>. |
| MLA | Smart Define. "doubtable thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/doubtable/thesaurus/synonyms> |