| winged(quick, rapid, speedy) | |
| agile(quick, rapid, speedy) | |
| alacritous | |
| at full tilt(expression, adjective, idiom, quick, rapid) | |
| dangerously fast(expression, adjective, quick, rapid, speedy) | |
| instant | |
| instantaneous | |
| rapidly | |
| speeding | |
| supersonic(quick, rapid, speedy) | |
| PDQ(quick, rapid, speedy) | |
| blue streak(expression, quick, rapid, speedy) | |
| brief | |
| chop-chop(quick, rapid, speedy) | |
| crisp | |
| dashing(quick, rapid, speedy) | |
| deft | |
| direct(adjective, prompt, fast, rapid, instant) | |
| double-time(quick, rapid, speedy) | |
| electric(quick, rapid, speedy) |
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| APA | Smart Define. (2016). high-speed thesaurus. Retrieved September 23, 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 23, 2026). |
| Harvard | Smart Define 2016, high-speed thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/high-speed/thesaurus/synonyms>. |
| MLA | Smart Define. "high-speed thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/high-speed/thesaurus/synonyms> |