157 entries under dubious topic. ×
| doubting(adjective, weak, uncertain, shy, hesitant) | |
| insecure(adjective, delicate, uncertain, awkward, nervous) | |
| shaky(adjective, weak, delicate, uncertain, anxious) | |
| unpredictable(noun, adjective, uncertain, shy, vague) | |
| unsteady(adjective, weak, delicate, uncertain, unstable) | |
| enigmatic(adjective, uncertain, vague, mysterious) | |
| inconceivable(adjective, extraordinary, unreasonable, amazing) | |
| open(adjective, uncertain, nervous, unstable, unsettled) | |
| unbelievable(adjective, great, extraordinary, unreasonable, fantastic) | |
| wavering(adjective, open, weak, uncertain, nervous) | |
| unstable(adjective, weak, delicate, uncertain, nervous) | |
| queer(adjective, unusual, strange, fantastic, odd) | |
| tricky(noun, adjective, weak, delicate, uncertain) | |
| dicey(noun, adjective, open, obscure, delicate) | |
| cynical(adjective, person, uncertain, negative, hesitant) | |
| doubtable(adjective, open, obscure, uncertain, shaky) | |
| questioning(adjective, uncertain, nervous, careful, hesitant) | |
| unconfident(adjective, uncertain, nervous, shaky) | |
| unconvinced(adjective, uncertain, nervous, hesitant) | |
| unimaginable(adjective, extraordinary, amazing, unlikely) |
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| 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> |