23 entries under summary topic. ×
| quick(adjective, prompt, fast, speedy) | |
| hasty(adjective, fast, impulsive, swift) | |
| prompt(adjective, direct, fast, quick, responsive) | |
| swift(adjective, fast, precise, responsive) | |
| abrupt(adjective, direct, fast, impulsive) | |
| sudden(adjective, fast, swift, immediate) | |
| speedy(adjective, direct, fast, precise, responsive) | |
| hurried(adjective, fast, rapid, swift) | |
| precipitate(verb, adjective, rapid, swift) | |
| short(adjective, rapid, swift, instant) | |
| expeditious(adjective, fast, precise, responsive) | |
| fleet(adjective, fast, rapid, swift) | |
| express(verb, adjective, fast, rapid) | |
| flying(fast, rapid, swift, instant) | |
| headlong(adjective, fast, rapid, swift) | |
| rushed(adjective, rapid, swift, instant) | |
| breakneck(fast, rapid, swift, instant) | |
| nimble(fast, rapid, swift, instant) | |
| on the double(expression, idiom, fast, swift) | |
| pronto(fast, rapid, swift, instant) |
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| APA | Smart Define. (2016). instantaneous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/instantaneous/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "instantaneous thesaurus" https://smartdefine.org/instantaneous/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, instantaneous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/instantaneous/thesaurus/synonyms>. |
| MLA | Smart Define. "instantaneous thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/instantaneous/thesaurus/synonyms> |