| hastily | |
| hightail | |
| immediate | |
| insightful | |
| instantaneous | |
| interesting | |
| lively | |
| meteoric(adjective, brief, sudden) | |
| nippy | |
| precipitate(verb, stop, check, speed, hurry) | |
| push(verb, stop, hold, advance, raise) | |
| rapidly | |
| speed(verb, move) | |
| speed up(verb, expression, phrasal verb) | |
| speedily | |
| speedy | |
| stir(stop, halt, prevent) | |
| sudden(adjective, unexpected, quickly) | |
| swift(adjective, fast) | |
| winged |
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| APA | Smart Define. (2016). slow thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/slow/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "slow thesaurus" https://smartdefine.org/slow/thesaurus/antonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, slow thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/slow/thesaurus/antonyms>. |
| MLA | Smart Define. "slow thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/slow/thesaurus/antonyms> |