Synonyms|274Antonyms|97|Broader|9Narrower|12Related|324
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mournfulness
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negativity
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nihilism(noun, believe)
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nonbelief
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oppression
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pessimist
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pragmatism
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reservation
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slump
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sulkiness
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sulky
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sullen
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sullenness
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trench
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trough
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uncertainty(noun, depression, doubt)
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woe
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APASmart Define. (2015). optimism thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/optimism/thesaurus/antonyms
ChicagoSmart Define. 2015. "optimism thesaurus" https://smartdefine.org/optimism/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, optimism thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/optimism/thesaurus/antonyms>.
MLASmart Define. "optimism thesaurus" 11 May 2015. Web. 22 September 2026. <https://smartdefine.org/optimism/thesaurus/antonyms>