| expeditive(quick, rapid, speedy) | |
| flashing(quick, rapid, speedy) | |
| fleeting(quick, rapid, speedy) | |
| flying(quick, rapid, speedy) | |
| hairtrigger(quick, rapid, speedy) | |
| high speed(expression, adjective, strong-minded, univocal, irrefrangible) | |
| hot(quick, rapid, speedy) | |
| hypersonic(quick, rapid, speedy) | |
| impetuous | |
| in a jiffy(expression, idiom, quick, rapid, speedy) | |
| in nothing flat(expression, idiom, quick, rapid, speedy) | |
| lickety split(expression, quick, rapid, speedy) | |
| like a bat out of hell(expression, idiom, quick, rapid, speedy) | |
| like all get out(expression, idiom, quick, rapid, speedy) | |
| like crazy(expression, quick, rapid, speedy) | |
| like mad(expression, quick, rapid, speedy) | |
| nonstop(adjective, direct, fast, rapid) | |
| on the double(expression, idiom, quick, rapid, speedy) | |
| posthaste(quick, rapid, speedy) | |
| precipitate |
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| APA | Smart Define. (2016). high-speed thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/high-speed/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "high-speed thesaurus" https://smartdefine.org/high-speed/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, high-speed thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/high-speed/thesaurus/synonyms>. |
| MLA | Smart Define. "high-speed thesaurus" 1 April 2016. Web. 24 September 2026. <https://smartdefine.org/high-speed/thesaurus/synonyms> |