54 entries under difficult topic. ×

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exhausting(adjective, tough, rough, heavy)
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grueling(adjective, awkward, demanding, problematical)
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herculean(adjective, tough, rough, heavy)
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intricate(adjective, tough, rough, heavy)
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labored(adjective, tough, rough, heavy)
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onerous(adjective, tough, rough, heavy)
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problematical(adjective, awkward, demanding, grueling)
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severe(adjective, tough, rough, heavy)
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testing(adjective, awkward, demanding, grueling)
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toilsome(adjective, tough, rough, heavy)
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tricky(adjective, awkward, demanding, grueling)
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troublesome(adjective, tough, rough, heavy)
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uphill(adjective, tough, rough, heavy)
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wearisome(adjective, tough, rough, heavy)
<123>
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APASmart Define. (2015). slavish thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/slavish/thesaurus/synonyms
ChicagoSmart Define. 2015. "slavish thesaurus" https://smartdefine.org/slavish/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, slavish thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/slavish/thesaurus/synonyms>.
MLASmart Define. "slavish thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/slavish/thesaurus/synonyms>