Synonyms|118Antonyms|1|Broader|0Narrower|0Related|22
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decent
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deep
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demanding
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difficult
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dignified
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distinguished
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effortful
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evilhearted(adjective, bad behavior)
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exacting
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excellent
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exceptional
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excruciating
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explosive
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exquisite
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extensive
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extreme
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famous
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fantastic
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fearful
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fearsome
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APASmart Define. (2016). hellacious thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/hellacious/thesaurus/synonyms
ChicagoSmart Define. 2016. "hellacious thesaurus" https://smartdefine.org/hellacious/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, hellacious thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/hellacious/thesaurus/synonyms>.
MLASmart Define. "hellacious thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/hellacious/thesaurus/synonyms>