12 entries under immediately topic. ×

19
expeditiously(adverb, directly, quickly, rapidly)
13
at once(expression, idiom, adverb, directly)
13
without delay(expression, idiom, adverb, directly)
8
fleetly(adverb, quickly, rapidly, soon)
7
posthaste(adjective, adverb, fast, velocity)
6
soon(adverb, directly, quickly, rapidly)
3
flat-out(quickly, rapidly, hastily, speedily)
3
in a flash(expression, idiom, adverb, directly)
3
on the double(expression, idiom, adverb, directly)
3
straight away(adverb, directly, instantly)
1
double-time(adverb, directly, soon, instantly)
1
on the dot(expression, adverb, directly, quickly)
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APASmart Define. (2016). swiftly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/swiftly/thesaurus/synonyms
ChicagoSmart Define. 2016. "swiftly thesaurus" https://smartdefine.org/swiftly/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, swiftly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/swiftly/thesaurus/synonyms>.
MLASmart Define. "swiftly thesaurus" 25 January 2016. Web. 21 September 2026. <https://smartdefine.org/swiftly/thesaurus/synonyms>