178 entries under adverb topic. ×

3
extravagantly
3
fixedly(firm, thoroughly, strongly, firmly)
3
fleetly(early, immediately, quickly, rapidly)
3
in a rush(quickly, rapidly, pronto)
3
instantaneously(quickly, rapidly, pronto)
3
like lighting(quickly, rapidly, pronto)
3
like wildfire(expression, idiom, quickly, rapidly)
3
loosely
3
soundly(firm, thoroughly, strongly, firmly)
3
steadfastly(close, firm, intensely, fiercely)
3
strongly(well, severely, thoroughly, intensely)
2
hell-for-leather(adjective, informal)
2
in a wink(expression, idiom)
2
like greased lightning(expression, idiom, speedy, brisk)
2
post-haste
2
straight(adjective, close, correct, firm)
2
violently(intensely, fiercely, powerfully)
2
without delay(expression, idiom, immediately, quickly)
1
in no time(expression, idiom, quickly, rapidly)
1
at once(expression, idiom, direct, immediately)
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APASmart Define. (2016). fast thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/fast/thesaurus/synonyms
ChicagoSmart Define. 2016. "fast thesaurus" https://smartdefine.org/fast/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, fast thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/fast/thesaurus/synonyms>.
MLASmart Define. "fast thesaurus" 1 April 2016. Web. 27 September 2026. <https://smartdefine.org/fast/thesaurus/synonyms>