Synonyms|261Antonyms|13|Broader|0Narrower|0Related|84

63 entries under adverb topic. ×

5
rapid(adjective, hot, fast, quick)
5
speedy(adjective, hot, fast, quick)
4
breakneck(adjective, hot, fast, quick)
4
expeditiously(quick, early, immediately, quickly)
4
immediately(quickly, rapidly, haste, speedily)
3
briskly(quickly, rapidly, speedily)
3
headlong(adjective, fast, rapid, swift)
3
hurriedly(quick, quickly, rapidly, soon)
3
instantaneously(velocity, haste)
2
abruptly
2
at once(expression, adjective, idiom, fast)
2
directly(adjective, fast)
2
flat out(informal, fast)
2
in nothing flat(expression, idiom, hot, fast)
2
lickety split(expression, adjective, hot, quick)
2
like a bat out of hell(expression, idiom, hot, fast)
2
like a shot(expression, idiom, fast, immediately)
2
pell-mell(adjective, fast, carelessly, hurriedly)
2
straightaway(adjective, fast)
1
hell-for-leather(informal, fast)
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APASmart Define. (2015). posthaste thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/posthaste/thesaurus/synonyms
ChicagoSmart Define. 2015. "posthaste thesaurus" https://smartdefine.org/posthaste/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, posthaste thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/posthaste/thesaurus/synonyms>.
MLASmart Define. "posthaste thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/posthaste/thesaurus/synonyms>