1
in seven-league boots(expression, idiom)
1
in the bud(expression, idiom, soon, swiftly, proximately)
1
in time(expression, soon, swiftly, proximately, snappily)
1
instantaneous(fast, rapid, swift)
1
instantly
1
keen(adjective, fast, rapid, swift)
1
lead out(expression, fast, rapid, swift)
1
lickety-cut
1
like a flash(expression, idiom, adverb, fast, quickly)
1
like all get out(expression, idiom, hot, quick, nimble)
1
like crazy(expression, hot, quick, nimble, speedy)
1
like greased lightning(expression, idiom, adverb, fast, quickly)
1
like mad(expression, hot, quick, nimble, speedy)
1
like wildfire(expression, idiom, adverb, fast, quickly)
1
lively(fast, rapid, swift)
1
mercurial(fast, rapid, swift)
1
more rapidly(expression, adverb, soon, swiftly, proximately)
1
move it(expression, fast, rapid, swift)
1
move on(expression, fast, rapid, swift)
1
nimble(adjective, hot, fast, quick, rapid)
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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>