114 entries under expression topic. ×
| out of line(idiom, dubious, suspect, shady) | |
| out of the ordinary(idiom, unusual, strange, dubious) | |
| out on a limb(idiom, uncertain, unstable, shaky) | |
| out on limb(adjective, idiom, delicate, uncertain) | |
| pass comprehension(idiom, unintelligibility) | |
| require explanation(idiom, unintelligibility) | |
| rings untrue(dubious, suspect, shady) | |
| smell a rat(idiom, unbelief doubt) | |
| under consideration(idiom, inquiry) | |
| under discussion(idiom, inquiry) | |
| under investigation(idiom, inquiry) | |
| undeserving of belief(idiom, unbelief doubt) | |
| yet to be decided(adjective, idiom, unsettled, undecided) | |
| at a complete loss(idiom, perplexed, bewildered, mystified) |
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| APA | Smart Define. (2016). doubtful thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, doubtful thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>. |
| MLA | Smart Define. "doubtful thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms> |