87 entries under adverb topic. ×

7
directly(fast, quickly, pronto)
7
double-quick(adjective, quick, hastily, impulsively)
7
fleetly(quick, early, quickly, hastily)
7
instantly(early, directly, immediately, quickly)
7
presto(adjective, quickly, speedily)
6
at once(expression, directly, immediately, quickly)
6
like greased lightning(expression, idiom, quickly, speedily)
5
in a flash(expression, idiom, directly, immediately)
5
in a trice(expression, idiom)
5
right away(expression, directly, immediately, instantly)
5
without delay(expression, directly, immediately, quickly)
4
in a jiffy(expression, idiom, directly, immediately)
4
in a wink(expression, idiom)
4
like mad(expression, intensely, fiercely, wildly)
4
nimbly
4
post-haste
3
at full speed(expression, idiom)
3
at speed(fast, quickly, pronto)
3
in a hurry(fast, quickly, pronto)
3
in a rush(fast, quickly, pronto)
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APASmart Define. (2015). rapidly thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rapidly/thesaurus/synonyms
ChicagoSmart Define. 2015. "rapidly thesaurus" https://smartdefine.org/rapidly/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, rapidly thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rapidly/thesaurus/synonyms>.
MLASmart Define. "rapidly thesaurus" 5 October 2015. Web. 24 September 2026. <https://smartdefine.org/rapidly/thesaurus/synonyms>