Synonyms|187Antonyms|5|Broader|2Narrower|0Related|24
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irregular(doubtful, vague, unsure)
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irresolute(adjective, open, uncertain, doubtful, unsettled)
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long shot(expression, shaky, unlikely, unpromising)
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marginal
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mootable(uncertain, doubtful, unsure)
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non-specific
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non-specified
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not born yesterday on the lookout(expression, adjective, idiom, careful, doubtful)
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not definite(expression, adjective, open, unsure, unresolved)
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not refuted(expression, adjective, unchallenged)
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not sure(expression, adjective, open, unsure, unresolved)
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of two minds(expression, adjective, idiom, open, unsure)
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on the fence(expression, adjective, idiom, open, unsure)
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on thin ice(expression, idiom, doubtful, shaky, vague)
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open to debate
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pendent(adjective, open, unsure, unresolved)
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pending(adjective, open, uncertain, unsettled, shaky)
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perplexed(uncertain, doubtful, unsure)
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polemic
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polemical
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APASmart Define. (2015). in doubt thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/in_doubt/thesaurus/synonyms
ChicagoSmart Define. 2015. "in doubt thesaurus" https://smartdefine.org/in_doubt/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, in doubt thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/in_doubt/thesaurus/synonyms>.
MLASmart Define. "in doubt thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/in_doubt/thesaurus/synonyms>