6
shortly(adverb, earliness)
6
straight away(adverb, away, now, immediately)
5
in a hurry(expression, idiom, adverb, fast, rapidly)
5
keenly
5
momentarily
5
nimbly
5
precipitately
5
snappily(adverb, soon, swiftly, posthaste)
4
adroitly(adverb, wittily)
4
agilely
4
brisk
4
cursorily
4
deftly(adverb, cunningly, wittily)
4
feverishly(adverb, hastily)
4
flat-out(immediately, rapidly, hastily, speedily, impulsively)
4
hasty(adjective, adverb)
4
headlong
4
impatiently(adverb, hastily)
4
impulsively
4
on the double(expression, idiom, adverb, quickly, rapidly)
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APASmart Define. (2016). quickly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/quickly/thesaurus/synonyms
ChicagoSmart Define. 2016. "quickly thesaurus" https://smartdefine.org/quickly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, quickly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/quickly/thesaurus/synonyms>.
MLASmart Define. "quickly thesaurus" 21 March 2016. Web. 22 September 2026. <https://smartdefine.org/quickly/thesaurus/synonyms>