70 entries under rapid topic. ×

40
swift(adjective, direct, express, prompt, hot)
37
quick(adjective, direct, express, prompt, energetic)
32
fast(adjective, adverb, direct, express, prompt)
24
expeditious(adjective, express, prompt, hot, fast)
18
nimble(adjective, hot, fast, quick, velocity)
17
prompt(adjective, direct, express, fast, quick)
17
immediate(adjective, adverb, direct, keen, express)
15
express(verb, adjective, keen, prompt, active)
15
ready(adjective, express, prompt, hot, fast)
14
snappy(adjective, prompt, hot, fast, quick)
7
sudden(adjective, fast, quick, abrupt)
6
active(adjective, movement, express, energetic, lively)
6
alacritous(adjective, prompt, lively, fast, quick)
6
headlong(adjective, prompt, fast, quick, abrupt)
6
spry(adjective, energetic, fast, quick)
6
whirlwind(adjective, fast, quick, urgent)
5
abrupt(adjective, direct, fast, irritable, quick)
5
accelerated(adjective, direct, express, prompt, hot)
5
alert(adjective, keen, energetic, active, fast)
5
dashing(adjective, strong, hot, fast, irritable)
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APASmart Define. (2016). speedy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/speedy/thesaurus/synonyms
ChicagoSmart Define. 2016. "speedy thesaurus" https://smartdefine.org/speedy/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, speedy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/speedy/thesaurus/synonyms>.
MLASmart Define. "speedy thesaurus" 1 April 2016. Web. 25 September 2026. <https://smartdefine.org/speedy/thesaurus/synonyms>