4
in no time(expression, idiom, adverb, quick, quickly)
4
like a shot(expression, idiom, adverb, immediately, quickly)
4
pronto(adverb, early, directly, immediately, quickly)
4
readily
4
without delay(expression, adverb, directly, immediately, quickly)
3
directly
3
double-quick(adverb, quick, rapidly, soon, hastily)
3
flat-out(quick, immediately, quickly, rapidly, hastily)
3
fleetly(adverb, quick, early, immediately, quickly)
3
full tilt(expression, quick, quickly, rapidly, snappily)
3
in haste(expression, quickly, rapidly, soon, snappily)
3
on the double(expression, idiom, adverb, directly, immediately)
3
posthaste(quick, early, immediately, quickly, rapidly)
3
presto(adverb, quickly, rapidly, speedily)
3
quick(early, quickly, rapidly, soon, swiftly)
3
snappily(adverb, soon, swiftly, posthaste, fleetly)
3
straightaway
3
summarily(adverb, delay)
3
with efficiency(expression, idiom, adverb)
2
feverishly
11 years ago|3.4k views|share |citing 
APASmart Define. (2015). expeditiously thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/expeditiously/thesaurus/synonyms
ChicagoSmart Define. 2015. "expeditiously thesaurus" https://smartdefine.org/expeditiously/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, expeditiously thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/expeditiously/thesaurus/synonyms>.
MLASmart Define. "expeditiously thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/expeditiously/thesaurus/synonyms>