Synonyms|11Antonyms|7|Broader|0Narrower|0Related|14
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deceleration(noun, slowdown)
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downtrend
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drop-off
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falloff
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slow-up
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slow up
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slowdown(noun, decrease, off)
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APASmart Define. (2013). speed-up thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/speed-up/thesaurus/antonyms
ChicagoSmart Define. 2013. "speed-up thesaurus" https://smartdefine.org/speed-up/thesaurus/antonyms (accessed September 20, 2026).
HarvardSmart Define 2013, speed-up thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/speed-up/thesaurus/antonyms>.
MLASmart Define. "speed-up thesaurus" 18 May 2013. Web. 20 September 2026. <https://smartdefine.org/speed-up/thesaurus/antonyms>