- Definitions|2
- Thesaurus|788
- Abbreviations|0
| dizzy(adjective, urgent) | |
| furious | |
| pelting(adjective, hasty) | |
| rapid-fire(adjective, prompt, fast, quick, urgent) | |
| steep(adjective, sharp, course, extreme, sheer) | |
| unheedful(adjective, rash) | |
| unsafe | |
| urgent(adjective, bad, heavy, quick, risky) | |
| venturesome(adjective, bad, nasty, careless, heavy) | |
| whirlwind(adjective, fast, urgent) | |
| winged(hot, fast, quick, nimble, speedy) | |
| zippy(adjective, urgent) | |
| accelerated(prompt, hot, fast, quick, speedy) | |
| bold(adjective, rash, reckless, risky, impetuous) | |
| brazen(adjective, rash) | |
| desperate(wild, thoughtless, daring, negligent, carefree) | |
| expeditive(hot, fast, quick, nimble, speedy) | |
| express(fast, quick, rapid, speedy, brisk) | |
| fleet-footed(adjective, urgent) | |
| harum-scarum(violent, fast, quick) |
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| APA | Smart Define. (2016). breakneck thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/breakneck/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "breakneck thesaurus" https://smartdefine.org/breakneck/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, breakneck thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/breakneck/thesaurus/synonyms>. |
| MLA | Smart Define. "breakneck thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/breakneck/thesaurus/synonyms> |