2
expeditive(hot, fast, quick, nimble, speedy)
2
flying(hot, fast, quick, abrupt, nimble)
2
forthwith(adverb, now, directly, immediately, rapidly)
2
hasty(adjective, hot, fast, quick, rapid)
2
in a New York minute(expression, adverb, directly, rapidly, instantly)
2
in a flash(expression, adverb, directly, quickly, rapidly)
2
in a jiffy(expression, hot, quick, speedy, directly)
2
instanter(adverb, now, directly, immediately, rapidly)
2
instantly(adverb, now, directly, immediately, rapidly)
2
lickety split(expression, hot, quick, nimble, speedy)
2
like a bat out of hell(expression, idiom, hot, quick, nimble)
2
like crazy(expression, hot, quick, abrupt, nimble)
2
like mad(expression, hot, quick, abrupt, nimble)
2
like now(expression, adverb, now, directly, immediately)
2
nimble(hot, fast, quick, summary, rapid)
2
now(adverb, directly, immediately, rapidly, instantly)
2
now or never(expression, adverb, directly, rapidly, instantly)
2
on the dot(expression, idiom, adverb, directly, rapidly)
2
on the spot(expression, adverb, directly, rapidly, instantly)
2
rapid(adjective, hot, fast, quick, summary)
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APASmart Define. (2015). on the double thesaurus. Retrieved September 27, 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 27, 2026).
HarvardSmart Define 2015, on the double thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/on_the_double/thesaurus/synonyms>.
MLASmart Define. "on the double thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/on_the_double/thesaurus/synonyms>