71 entries under idiom topic. ×
| in doubt(expression, adjective, clear, certain) | |
| in question(expression, adjective, clear, obscure) | |
| open to question(expression, adjective, uncertain, dubious) | |
| in dispute(expression, adjective, inquiry) | |
| hard to believe(expression, adjective, unbelief doubt) | |
| open to doubt(expression, uncertain, dubious, astonishing) | |
| at issue(adjective, clear, certain) | |
| of two minds(expression, adjective, open, uncertain) | |
| open to suspicion(expression, unbelief doubt) | |
| betwixt and between(expression, open, uncertain, dubious) | |
| clear as dishwater(expression, uncertain, vague, unclear) | |
| feel in bones(expression, adjective, uncertain, anxious) | |
| for the birds(expression, extraordinary, unreasonable, dubious) | |
| full of holes(expression, extraordinary, unreasonable, dubious) | |
| hanging by a thread(expression, adjective, delicate, uncertain) | |
| hard of belief | |
| have a hunch(expression, adjective, uncertain, anxious) | |
| have cold feet(expression, adjective, uncertain, anxious) | |
| have funny feeling(expression, adjective, uncertain, anxious) | |
| have stage fright(expression, adjective, uncertain, anxious) |
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| APA | Smart Define. (2016). doubtful thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/doubtful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "doubtful thesaurus" https://smartdefine.org/doubtful/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, doubtful thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/doubtful/thesaurus/synonyms>. |
| MLA | Smart Define. "doubtful thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/doubtful/thesaurus/synonyms> |