70 entries under rapid topic. ×

4
flashing(adjective, hot, quick, immediate)
4
high-speed(adjective, direct, express, fast, quick)
4
hot(adjective, quick, urgent)
4
presto(adjective, hot, fast, quick)
3
nippy(adjective, fast, quick, swift)
3
posthaste(adjective, adverb, hot, fast, quick)
3
rushed(adjective, quick, summary, abrupt)
3
snap
2
PDQ(hot, quick, hurried)
2
double-quick(adverb, summary, abrupt, unexpected)
2
electric(hot, quick, velocity)
2
impulsive(quick, abrupt, unexpected, hurried)
2
keen(adjective, fast, swift)
2
pronto(hot, fast, quick, abrupt)
2
rash(adjective, quick, abrupt, unexpected)
2
reckless(quick, hurried, headlong)
2
short-lived(adjective, summary, abrupt, unexpected)
2
spanking(summary, abrupt, unexpected, instant)
2
sprightly(energetic, fast, swift)
2
supersonic(adjective, prompt, hot, fast, quick)
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APASmart Define. (2016). speedy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/speedy/thesaurus/synonyms
ChicagoSmart Define. 2016. "speedy thesaurus" https://smartdefine.org/speedy/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, speedy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/speedy/thesaurus/synonyms>.
MLASmart Define. "speedy thesaurus" 1 April 2016. Web. 26 September 2026. <https://smartdefine.org/speedy/thesaurus/synonyms>