108 entries under severe topic. ×

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solemn(adjective, hard, rough, difficult)
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startling(hard, offensive, distressing, upsetting)
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stern(adjective, hard, rough, difficult)
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strict(adjective, hard, rough, difficult)
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troubling(hard, offensive, distressing, upsetting)
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uncertain(hard, offensive, distressing, upsetting)
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unpermissive(adjective, hard, rough, difficult)
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unsettling(hard, offensive, distressing, upsetting)
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APASmart Define. (2016). laborious thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/laborious/thesaurus/synonyms
ChicagoSmart Define. 2016. "laborious thesaurus" https://smartdefine.org/laborious/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, laborious thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/laborious/thesaurus/synonyms>.
MLASmart Define. "laborious thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/laborious/thesaurus/synonyms>