Synonyms|250Antonyms|32|Broader|4Narrower|1Related|25
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crisis(difficulty, laboriousness, strenuousness)
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cruel treatment(expression, idiom)
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cruelness
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crux(difficulty, laboriousness, strenuousness)
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danger(noun, severity, harshness)
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dead end(expression, difficulty, laboriousness, strenuousness)
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deadlock(difficulty, laboriousness, strenuousness)
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deep water(expression, difficulty, laboriousness, strenuousness)
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definitiveness(noun, correctness, precision, accuracy)
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definitude(noun, correctness, precision, accuracy)
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dependability(firmness, rigidity, stiffness)
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despotism
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determination(firmness, rigidity, stiffness)
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dilemma(difficulty, laboriousness, strenuousness)
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distinction(noun, precision)
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distress(difficulty, laboriousness, strenuousness)
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durability(firmness, rigidity, stiffness)
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easy
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emergency(difficulty, laboriousness, strenuousness)
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endurance(firmness, rigidity, stiffness)
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APASmart Define. (2015). rigorousness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/rigorousness/thesaurus/synonyms
ChicagoSmart Define. 2015. "rigorousness thesaurus" https://smartdefine.org/rigorousness/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, rigorousness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/rigorousness/thesaurus/synonyms>.
MLASmart Define. "rigorousness thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/rigorousness/thesaurus/synonyms>