Synonyms|1.8kAntonyms|185|Broader|32Narrower|83Related|804
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sign over(expression, hold, keep)
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silver bullet
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slacken
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smother
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soften
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stabilize
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stop
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strangle
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subdue
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substantiate
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suffocate
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susceptible
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thanks
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throw in the towel(expression, idiom, continue, fight)
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undo
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validate
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verify
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vindicate
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walkaway
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walkover
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APASmart Define. (2016). challenge thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/challenge/thesaurus/antonyms
ChicagoSmart Define. 2016. "challenge thesaurus" https://smartdefine.org/challenge/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, challenge thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/challenge/thesaurus/antonyms>.
MLASmart Define. "challenge thesaurus" 1 April 2016. Web. 24 September 2026. <https://smartdefine.org/challenge/thesaurus/antonyms>