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39 entries under rapidly topic. ×

3
now(adverb, directly, immediately, instantly)
2
at once(expression, adverb, directly, immediately)
2
directly(adverb, immediately, instantly)
2
forthwith(adverb, directly, immediately, instantly)
2
instantaneously(adverb, directly, immediately, instantly)
2
instanter(adverb, directly, immediately, instantly)
2
instantly(adverb, directly, immediately)
2
on the dot(expression, idiom, directly, instantly)
2
promptly(adverb, directly, immediately, instantly)
2
pronto(adverb, directly, immediately, instantly)
2
tout de suite(expression, adverb, directly, immediately)
2
without delay(expression, adverb, directly, immediately)
1
PDQ(directly, immediately, instantly, shortly)
1
anon(directly, immediately, instantly, shortly)
1
at short notice(expression, idiom, directly, instantly)
1
away(directly, immediately, instantly)
1
double-time(directly, immediately, instantly, shortly)
1
hereupon(directly, immediately, instantly, shortly)
1
in a New York minute(expression, idiom, directly, instantly)
1
in a flash(expression, idiom, directly, instantly)
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APASmart Define. (2015). this instant thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/this_instant/thesaurus/synonyms
ChicagoSmart Define. 2015. "this instant thesaurus" https://smartdefine.org/this_instant/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, this instant thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/this_instant/thesaurus/synonyms>.
MLASmart Define. "this instant thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/this_instant/thesaurus/synonyms>