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scabrous(adjective, tough, rough, difficult, heavy)
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slavish(adjective, tough, rough, difficult, heavy)
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terrible(adjective, tough, rough, difficult, heavy)
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uphill battle(expression, adjective, tough, rough, difficult)
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APASmart Define. (2015). burdensome thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/burdensome/thesaurus/synonyms
ChicagoSmart Define. 2015. "burdensome thesaurus" https://smartdefine.org/burdensome/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, burdensome thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/burdensome/thesaurus/synonyms>.
MLASmart Define. "burdensome thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/burdensome/thesaurus/synonyms>