72 entries under rapidly topic. ×

1
in a New York minute(expression, idiom, directly, immediately)
1
in a second(expression, idiom, adverb, early, immediately)
1
in due time(expression, idiom, early, soon)
1
like a flash(expression, idiom, adverb, fast, quickly)
1
like wildfire(expression, idiom, adverb, fast, quickly)
1
now or never(expression, idiom, directly, immediately)
1
short(quick, summary, early, abrupt, unexpected)
1
soon afterward(expression, directly, immediately, instantly)
1
thereupon(directly, immediately, instantly)
1
urgently(directly, immediately, instantly, shortly)
0
at the double(expression, idiom, quickly, speedily)
0
like lightning(expression, quickly, speedily)
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APASmart Define. (2015). pronto thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/pronto/thesaurus/synonyms
ChicagoSmart Define. 2015. "pronto thesaurus" https://smartdefine.org/pronto/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, pronto thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/pronto/thesaurus/synonyms>.
MLASmart Define. "pronto thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/pronto/thesaurus/synonyms>