157 entries under dubious topic. ×
| whimsical(adjective, changeable, risky, erratic) | |
| wimpy(adjective, weak, uncertain, nervous, shaky) | |
| contrary | |
| different(suspect, shady) | |
| far out(expression, unreasonable, unlikely, flimsy) | |
| fluctuant(uncertain, nervous, insecure, unsure) | |
| incalculable(vague, changeable, unsure, risky) | |
| not probable(expression, improbable) | |
| out of line(expression, idiom, suspect, shady) | |
| out of the ordinary(expression, idiom, unusual, strange) | |
| overt(suspect, shady) | |
| pseudo(adjective, suspicious) | |
| reachy(unreasonable, unlikely, flimsy, unbelievable) | |
| rings untrue(expression, suspect, shady) | |
| slight | |
| unusual(strange, suspect, shady, unexpected) | |
| astonishing(extraordinary, amazing, incredible) |
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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> |