9
pronto(adverb, hot, quick, speedy, directly)
6
promptly(adverb, now, directly, immediately, quickly)
5
hastily(adverb, quickly, rapidly, speedily)
5
hurried(adverb, hot, fast, quick, nimble)
5
quick(adjective, adverb, hot, fast, summary)
5
quickly(adverb, quickly, rapidly, soon, swiftly)
5
soon(adverb, now, directly, immediately, rapidly)
5
swiftly(adverb, directly, immediately, quickly, rapidly)
4
double-time(adverb, hot, quick, speedy, directly)
4
fast(adverb, quick, speedy, brisk, hasty)
4
lickety-split(adverb, quickly)
4
rapidly(adverb, directly, immediately, quickly, instantly)
4
speedily(adverb, directly, immediately, quickly, rapidly)
4
swift(adjective, adverb, hot, fast, quick)
3
double time(noun, expression, fast, quick, brisk)
3
expeditiously(adverb, directly, immediately, quickly, rapidly)
3
fleet(adjective, hot, fast, quick, nimble)
3
in double time(expression, idiom, adverb, quickly, soon)
3
in haste(expression, adverb, quickly, rapidly, soon)
3
in high gear(expression, idiom, adverb, quickly, soon)
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APASmart Define. (2015). on the double thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/on_the_double/thesaurus/synonyms
ChicagoSmart Define. 2015. "on the double thesaurus" https://smartdefine.org/on_the_double/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, on the double thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/on_the_double/thesaurus/synonyms>.
MLASmart Define. "on the double thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/on_the_double/thesaurus/synonyms>