| apt | |
| fleet(adjective, quick) | |
| acute(adjective, dull, moderate, perceptive) | |
| alert | |
| amazing | |
| animal | |
| astute | |
| blue(adjective, immorality, degradation) | |
| brainy | |
| breakneck | |
| bustling | |
| cursory | |
| energetic(adjective, dull, full, forceful, lethargic) | |
| enliven | |
| expeditious(adjective, speedy, immediate) | |
| flash(verb, dull, display) | |
| flying | |
| forward(verb, stop, check) | |
| fresh | |
| happy |
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| APA | Smart Define. (2016). slow thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/slow/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "slow thesaurus" https://smartdefine.org/slow/thesaurus/antonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, slow thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/slow/thesaurus/antonyms>. |
| MLA | Smart Define. "slow thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/slow/thesaurus/antonyms> |