Synonyms|533Antonyms|331|Broader|9Narrower|12Related|411
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greatness
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hardihood
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hastiness
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healthfulness
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heartiness
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heedfulness
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high pitch(expression, calm, ease)
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hopper(question, inactivity, idleness)
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hu
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hurriedness
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hurry
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immobility
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impellent
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impetuosity(inactivity, calmness)
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impetus
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impressiveness(weakness, dullness)
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impulsion
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in the works(expression, idiom, question, inactivity, idleness)
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incandescence
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incisiveness
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APASmart Define. (2016). lethargy thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/lethargy/thesaurus/antonyms
ChicagoSmart Define. 2016. "lethargy thesaurus" https://smartdefine.org/lethargy/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, lethargy thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/lethargy/thesaurus/antonyms>.
MLASmart Define. "lethargy thesaurus" 25 February 2016. Web. 28 September 2026. <https://smartdefine.org/lethargy/thesaurus/antonyms>