Synonyms|58Antonyms|0|Broader|2Narrower|0Related|13
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confirmation(noun, trial, proof, touchstone)
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critical test
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critical trial
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crosscheck
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crucial
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crucial trial
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diagnostic
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evidence(noun, sign)
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first case(noun, expression, precedent)
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first occurrence(noun, expression, precedent)
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hallmark
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indicator
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measure
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precedent
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probe
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representative occurrence(noun, expression, precedent)
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sign
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yardstick
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APASmart Define. (2015). acid test thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/acid_test/thesaurus/synonyms
ChicagoSmart Define. 2015. "acid test thesaurus" https://smartdefine.org/acid_test/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, acid test thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/acid_test/thesaurus/synonyms>.
MLASmart Define. "acid test thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/acid_test/thesaurus/synonyms>