Synonyms|312Antonyms|44|Broader|0Narrower|0Related|432
2
risky
2
rushed(adjective, quick, summary, rapid, speedy)
2
sharp(adjective, course, irritable, bad-tempered, tetchy)
2
sheer(adjective, sharp, course, vertical)
2
slapdash(quick, speedy, swift, hurried, rushed)
2
speedball(hot, fast, quick, summary, nimble)
2
supersonic(prompt, hot, fast, quick, rapid)
2
vertical(adjective, sharp, sheer)
1
PDQ(hot, quick, rapid, nimble, speedy)
1
accident-prone
1
accident prone
1
adventuresome(adjective, careless, wild, bold, thoughtless)
1
alacritous(prompt, fast, quick, summary, rapid)
1
alert(prompt, fast, quick, rapid, speedy)
1
at full tilt(expression, adjective, idiom, fast, quick)
1
blistering(adjective, urgent)
1
blue streak(expression, hot, quick, nimble, speedy)
1
bluff
1
brief(adjective, violent, fast, quick, rapid)
1
bright
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ChicagoSmart Define. 2016. "breakneck thesaurus" https://smartdefine.org/breakneck/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, breakneck thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/breakneck/thesaurus/synonyms>.
MLASmart Define. "breakneck thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/breakneck/thesaurus/synonyms>