10 entries under idiom topic. ×

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blind bargain(expression, uncertainty)
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double contingency(expression, uncertainty)
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double meaning(expression, uncertainty)
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hay cock
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hay stack
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non possumus(expression, impossibility)
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onus probandi(expression, uncertainty)
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open question(expression, uncertainty)
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roving commission(expression, uncertainty)
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standing wave
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APASmart Define. (2015). haystack thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/haystack/thesaurus/synonyms
ChicagoSmart Define. 2015. "haystack thesaurus" https://smartdefine.org/haystack/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, haystack thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/haystack/thesaurus/synonyms>.
MLASmart Define. "haystack thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/haystack/thesaurus/synonyms>