117 entries under vague topic. ×
| unbelievable(adjective, great, extraordinary, unreasonable, fantastic) | |
| wavering(adjective, open, weak, uncertain, nervous) | |
| speculative(adjective, uncertain, unclear, interested) | |
| tentative(adjective, open, weak, uncertain, shy) | |
| conjectural(adjective, unsure, imaginary, theoretical) | |
| confused(adjective, weak, obscure, dark, uncertain) | |
| contingent(adjective, delicate, uncertain, unstable, shaky) | |
| risky(noun, adjective, weak, delicate, uncertain) | |
| erratic(adjective, unusual, strange, dubious) | |
| puzzling(dark, strange, uncertain, unreasonable) | |
| shifty(dishonest, dubious, unreliable, crooked) | |
| theoretical(adjective, uncertain, hesitant, unsure) | |
| undependable(adjective, uncertain, nervous, dubious) | |
| ambivalent(adjective, open, unsure, ambiguous) | |
| cryptic(dark, uncertain, dishonest, dubious) | |
| confusing(uncertain, unclear, ambiguous, misleading) | |
| evasive(adjective, uncertain, dishonest, faint) | |
| imprecise(adjective, rough, unknown, unclear) | |
| inaccurate(adjective, rough, untrue, inexact) | |
| inexact(adjective, open, weak, obscure, rough) |
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| APA | Smart Define. (2016). doubtful thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, doubtful thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>. |
| MLA | Smart Define. "doubtful thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms> |