80 entries under difficult topic. ×

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exacting(adjective, awkward, demanding, grueling)
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exhausting(adjective, awkward, demanding, grueling)
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fancy(adjective, complex, intricate, thorny)
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fatiguing(adjective, awkward, demanding, grueling)
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full of twists and turns(expression, adjective, idiom, complex)
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gasser(adjective, complex, intricate, thorny)
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grinding(adjective, awkward, demanding, grueling)
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heavy(adjective, awkward, demanding, grueling)
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herculean(adjective, awkward, demanding, grueling)
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hi-tech(adjective, complex, intricate, thorny)
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interlaced(adjective, complex, intricate, thorny)
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irksome(adjective, awkward, demanding, grueling)
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labored(adjective, awkward, demanding, grueling)
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laborious(adjective, awkward, demanding, grueling)
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mean(adjective, awkward, demanding, grueling)
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mega factor(expression, adjective, complex, intricate)
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merciless(adjective, awkward, demanding, grueling)
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mixed(adjective, complex, intricate, thorny)
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murder(adjective, awkward, demanding, grueling)
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onerous(adjective, awkward, demanding, grueling)
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APASmart Define. (2015). problematical thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/problematical/thesaurus/synonyms
ChicagoSmart Define. 2015. "problematical thesaurus" https://smartdefine.org/problematical/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, problematical thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/problematical/thesaurus/synonyms>.
MLASmart Define. "problematical thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/problematical/thesaurus/synonyms>