1
cursory(adjective, fast, rapid, swift)
1
curt(fast, rapid, swift)
1
dashing(hot, quick, rapid, nimble, speedy)
1
double-time(hot, quick, rapid, nimble, speedy)
1
double time(expression, fast, rapid, swift)
1
electric(hot, quick, rapid, nimble, speedy)
1
energetic(fast, rapid, swift)
1
ere long(expression, early, rapidly, soon, swiftly)
1
flashing(hot, quick, rapid, nimble, speedy)
1
fleeting(hot, quick, rapid, nimble, speedy)
1
flying(hot, fast, quick, nimble, speedy)
1
going(fast, rapid, swift)
1
hairtrigger(hot, quick, rapid, nimble, speedy)
1
hand over fist(expression, idiom)
1
hand over hand(expression, idiom)
1
harefooted(fast, rapid, swift)
1
heedlessly
1
hell-bent
1
hell-bent for election(expression, idiom)
1
hell-for-leather(adverb, informal, fast)
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APASmart Define. (2015). posthaste thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/posthaste/thesaurus/synonyms
ChicagoSmart Define. 2015. "posthaste thesaurus" https://smartdefine.org/posthaste/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, posthaste thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/posthaste/thesaurus/synonyms>.
MLASmart Define. "posthaste thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/posthaste/thesaurus/synonyms>