- Definitions|0
- Thesaurus|218
- Abbreviations|0
| puzzling | |
| quizzical(wary, mistrustful, distrustful) | |
| refutable | |
| scrupulous | |
| shady(adjective, uncertain, doubtful, shaky, unsure) | |
| suppositional | |
| unanswered(adjective, uncertain, unsettled, vague, unchallenged) | |
| unbelieving(wary, mistrustful, distrustful) | |
| undetermined(adjective, open, uncertain, doubtful, unsettled) | |
| uneasy(shaky, unlikely, unpromising) | |
| unfixed(doubtful, vague, unsure) | |
| unpredictable(adjective, doubtful, vague, unsure) | |
| untrusting | |
| up in the air(expression, adjective, idiom, open, uncertain) | |
| uptight(wary, mistrustful, distrustful) | |
| watchful(wary, mistrustful, distrustful) | |
| wondering(wary, mistrustful, distrustful) | |
| ambivalent(adjective, open, doubtful, vague, unsure) | |
| anxious(worried, troubled) | |
| anybody's guess |
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| APA | Smart Define. (2015). in doubt thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/in_doubt/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "in doubt thesaurus" https://smartdefine.org/in_doubt/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, in doubt thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/in_doubt/thesaurus/synonyms>. |
| MLA | Smart Define. "in doubt thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/in_doubt/thesaurus/synonyms> |