97 entries under difficulty topic. ×

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millstone(weakness, burden, defect, impairment)
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monkey wrench(expression, hindrance, problem, impediment)
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pickle(problem, bug, impediment, hitch)
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pretty pass(expression, idiom)
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prohibition(weakness, burden, defect, impairment)
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puzzler(problem, disadvantage, bug, impediment)
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red tape(expression, weakness, burden, defect)
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restraint(weakness, burden, hindrance, defect)
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restriction(weakness, burden, hindrance, problem)
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retardment(weakness, burden, defect, impairment)
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road block(expression, weakness, burden, defect)
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shackle(weakness, burden, hindrance, defect)
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spot(problem, bug, impediment, hitch)
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stricture(weakness, burden, defect, impairment)
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tie(weakness, burden, defect, impairment)
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trammel(weakness, burden, defect, impairment)
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vicissitude(noun, restraint, hindrance, problem)
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APASmart Define. (2015). rub thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/rub/thesaurus/synonyms
ChicagoSmart Define. 2015. "rub thesaurus" https://smartdefine.org/rub/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, rub thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/rub/thesaurus/synonyms>.
MLASmart Define. "rub thesaurus" 3 August 2015. Web. 22 September 2026. <https://smartdefine.org/rub/thesaurus/synonyms>