- Definitions|1
- Thesaurus|358
- Abbreviations|0
80 entries under fast topic. ×
| apace(adverb, quick, velocity, quickly) | |
| quick(adjective, adverb, hot, speedy) | |
| rapidly(adjective, adverb, quick, early) | |
| hastily(adjective, adverb, quick, early) | |
| promptly(adjective, adverb, quick, early) | |
| pronto(adjective, adverb, informal, hot) | |
| quickly(adjective, adverb, immediately, rapidly) | |
| swift(adjective, adverb, hot, quick) | |
| swiftly(adjective, adverb, velocity, immediately) | |
| fast(adjective, adverb, early, speedy) | |
| lickety-split(adjective, adverb, informal) | |
| speedily(adjective, adverb, quick, early) | |
| flat-out(adjective, adverb, quick, immediately) | |
| full tilt(expression, adjective, idiom, adverb) | |
| hasty(adjective, adverb, hot, quick) | |
| double-quick(adjective, adverb, quick, rapidly) | |
| expeditious(adjective, adverb, hot, quick) | |
| fleet(adjective, adverb, hot, quick) | |
| fleetly(adjective, adverb, quick, early) | |
| rapid(adjective, adverb, hot, quick) |
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| APA | Smart Define. (2015). posthaste thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/posthaste/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "posthaste thesaurus" https://smartdefine.org/posthaste/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, posthaste thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/posthaste/thesaurus/synonyms>. |
| MLA | Smart Define. "posthaste thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/posthaste/thesaurus/synonyms> |