29 entries under quickly topic. ×

24
immediately(adverb, first, directly, haste)
19
directly(adverb, fast, rapidly, instantly)
19
instantly(adverb, first, directly, immediately)
17
promptly(adverb, fast, rapidly, instantly)
13
abruptly(adverb, fast, rapidly, instantly)
11
pronto(adverb, fast, rapidly)
11
rapidly(adverb, fast, pronto)
11
speedily(adverb, fast, rapidly, earliness)
11
swiftly(adverb, fast, velocity, rapidly)
10
hastily(adverb, fast, rapidly, suddenly)
10
instanter(adverb, directly, immediately, rapidly)
8
forthwith(adverb, directly, immediately, rapidly)
7
apace(adverb, fast, velocity, rapidly)
7
in haste(expression, idiom, adverb, fast)
5
hurriedly(adverb, fast, rapidly, pronto)
4
fast(adjective, adverb, rapidly, pronto)
4
like a shot(expression, idiom, adverb, fast)
3
at speed(adverb, fast, rapidly, pronto)
3
briskly(adverb, fast, rapidly, pronto)
3
chop-chop(adverb, fast, rapidly, pronto)
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APASmart Define. (2015). instantaneously thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/instantaneously/thesaurus/synonyms
ChicagoSmart Define. 2015. "instantaneously thesaurus" https://smartdefine.org/instantaneously/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, instantaneously thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/instantaneously/thesaurus/synonyms>.
MLASmart Define. "instantaneously thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/instantaneously/thesaurus/synonyms>