Synonyms|439Antonyms|85|Broader|1Narrower|0Related|197
4
post-haste
4
precipitately
4
tear off
4
unexpectedly
3
at speed(adverb, fast, quickly, rapidly, pronto)
3
briefly
3
flat-out(immediately, quickly, rapidly, hastily, speedily)
3
fleetingly
3
full tilt(expression, adverb, quickly, rapidly, soon)
3
in a flash(expression, idiom, adverb, directly, immediately)
3
in a hurry(adverb, fast, quickly, rapidly, pronto)
3
in a rush(adverb, fast, quickly, rapidly, pronto)
3
instanter
3
like a flash(expression, idiom, adverb, quickly, rapidly)
3
like lighting(adverb, fast, quickly, rapidly, pronto)
3
momentarily
3
on the double(expression, idiom, adverb, directly, immediately)
3
p.d.q.
3
presto(adverb, quickly, rapidly, speedily)
3
punctually(adverb, punctually)
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APASmart Define. (2016). swiftly thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/swiftly/thesaurus/synonyms
ChicagoSmart Define. 2016. "swiftly thesaurus" https://smartdefine.org/swiftly/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, swiftly thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/swiftly/thesaurus/synonyms>.
MLASmart Define. "swiftly thesaurus" 25 January 2016. Web. 23 September 2026. <https://smartdefine.org/swiftly/thesaurus/synonyms>