157 entries under dubious topic. ×
| untrustworthy(adjective, weak, uncertain, nervous, sensitive) | |
| contingent(adjective, delicate, uncertain, unstable, shaky) | |
| flimsy(adjective, great, extraordinary, unreasonable, amazing) | |
| hazardous(adjective, open, obscure, delicate, uncertain) | |
| hypothetical(adjective, uncertain, imaginary, theoretical) | |
| open to question(expression, adjective, idiom, uncertain) | |
| remote(adjective, unlikely, improbable) | |
| risky(noun, adjective, weak, delicate, uncertain) | |
| slippery(adjective, weak, delicate, uncertain, unstable) | |
| sneaky(adjective, informal, shaky, unclear) | |
| strange(adjective, unusual, fantastic, unexpected) | |
| unconvincing(adjective, extraordinary, unreasonable, fantastic) | |
| weak(adjective, great, extraordinary, uncertain, anxious) | |
| apocryphal(adjective, fake, uncertain, questionable) | |
| erratic(adjective, unusual, strange, vague) | |
| farfetched(adjective, unreasonable, suspect, shady) | |
| fearful(adjective, weak, uncertain, anxious, nervous) | |
| mysterious(dark, unusual, strange, uncertain) | |
| not kosher(expression, suspect, shady) | |
| puzzling(dark, strange, uncertain, unreasonable, vague) |
For more, visit
Doubtful on
Power Thesaurus
| APA | Smart Define. (2016). doubtful thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, doubtful thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>. |
| MLA | Smart Define. "doubtful thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms> |