80 entries under speedy topic. ×

6
incautious(adjective, careless, wild, quick, bold)
5
presto(adjective, hot, fast, quick, nimble)
4
active(adjective, prompt, hot, fast, quick)
4
agile(adjective, prompt, hot, fast, quick)
4
hot(adjective, bad, heavy, quick, treacherous)
4
impatient(adjective, violent, fast, irritable, quick)
4
posthaste(adjective, adverb, hot, fast, quick)
4
prompt(adjective, fast, quick, rapid)
4
sudden(adjective, keen, sharp, energetic, active)
3
winged(hot, fast, quick, nimble)
2
accelerated(prompt, hot, fast, quick)
2
expeditive(hot, fast, quick, nimble)
2
express(fast, quick, rapid, brisk)
2
high-speed(adjective, fast, quick, rapid)
2
immediate(adjective, prompt, fast, irritable, quick)
2
in nothing flat(expression, hot, fast, quick)
2
lively(prompt, fast, quick, brisk)
2
mercurial(fast, quick, rapid, brisk)
2
on the double(expression, hot, fast, quick)
2
precipitous(adjective, sharp, fast, course, quick)
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APASmart Define. (2016). breakneck thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/breakneck/thesaurus/synonyms
ChicagoSmart Define. 2016. "breakneck thesaurus" https://smartdefine.org/breakneck/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, breakneck thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/breakneck/thesaurus/synonyms>.
MLASmart Define. "breakneck thesaurus" 1 April 2016. Web. 27 September 2026. <https://smartdefine.org/breakneck/thesaurus/synonyms>