27 entries under rapidly topic. ×

23
quickly(adverb, straight, now, promptly)
21
speedily(adverb, freely, directly, quickly, easily)
21
swiftly(adverb, directly, quickly, haste)
17
pronto(adverb, quick, now, directly, quickly)
11
hastily(adverb, quickly, speedily, suddenly)
7
apace(quickly, haste, speedily, earliness)
7
suddenly(adverb, directly, instantly, promptly)
6
expeditiously(adverb, directly, quickly, instantly)
6
fast(adjective, quickly, speedily)
5
hurriedly(adverb, quickly, speedily, suddenly)
5
like a shot(expression, idiom, adverb, quickly)
4
in haste(expression, idiom, adverb, quickly)
3
like greased lightning(expression, idiom, adverb, quickly)
3
presto(first, now, directly, quickly)
3
quick(adjective, prompt, timely, directly, quickly)
2
briskly(quickly, speedily)
2
chop-chop(adverb, quickly, speedily)
2
posthaste(quickly, haste, speedily)
2
swift(quickly, speedily)
1
at the double(expression, idiom, quickly, speedily)
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APASmart Define. (2016). immediately thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/immediately/thesaurus/synonyms
ChicagoSmart Define. 2016. "immediately thesaurus" https://smartdefine.org/immediately/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, immediately thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/immediately/thesaurus/synonyms>.
MLASmart Define. "immediately thesaurus" 24 February 2016. Web. 24 September 2026. <https://smartdefine.org/immediately/thesaurus/synonyms>