Synonyms|402Antonyms|192|Broader|3Narrower|12Related|1.1k
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injured
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inoculable
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insalubrious
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leery
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maleficent
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malicious
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malign
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mediocre
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menaceworthy(adjective, good feeling)
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miserable
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out on limb(expression, idiom, honest)
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perverse
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petulant
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piquant
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poison
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raging
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rapacious
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rotten
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slippery
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smeared
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APASmart Define. (2016). harmless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/harmless/thesaurus/antonyms
ChicagoSmart Define. 2016. "harmless thesaurus" https://smartdefine.org/harmless/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, harmless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/harmless/thesaurus/antonyms>.
MLASmart Define. "harmless thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/harmless/thesaurus/antonyms>