- Definitions|1
- Thesaurus|358
- Abbreviations|0
| abrupt(adjective, fast, rapid, swift) | |
| accelerated(hot, fast, quick, rapid, speedy) | |
| active(adjective, hot, fast, quick, nimble) | |
| agile(adjective, hot, fast, quick, nimble) | |
| agilely | |
| alacrity | |
| alert(adjective, fast, rapid, swift) | |
| animated(fast, rapid, swift) | |
| any minute now(expression, idiom, soon, swiftly, snappily) | |
| at flank speed(expression, idiom) | |
| before long(expression, soon, swiftly, proximately, snappily) | |
| blue streak(expression, hot, quick, nimble, speedy) | |
| bright and early(expression, idiom, soon, swiftly, proximately) | |
| brisk(hot, fast, quick, rapid, nimble) | |
| by airmail | |
| by and by(expression, idiom, early, rapidly, soon) | |
| by return mail(expression, idiom) | |
| carelessly | |
| chop chop(expression, soon, swiftly, snappily) | |
| coming down the pike(expression, idiom, early, rapidly, soon) |
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| APA | Smart Define. (2015). posthaste thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/posthaste/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "posthaste thesaurus" https://smartdefine.org/posthaste/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, posthaste thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/posthaste/thesaurus/synonyms>. |
| MLA | Smart Define. "posthaste thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/posthaste/thesaurus/synonyms> |