10
pronto(adverb, early, now, directly, immediately)
10
soon(adverb, first, now, directly, immediately)
8
abruptly(adverb, suddenly)
8
right off(verb, expression, adverb, phrasal verb, time)
8
suddenly(adverb, suddenly)
7
expeditiously(adverb, early, directly, immediately, rapidly)
7
in no time(noun, expression, idiom, first, now)
7
outright(adverb, immediately)
6
hastily(adverb, suddenly)
6
rapidly(adverb, early, directly, immediately, quickly)
6
readily(adverb, directly, immediately)
6
summarily(adverb, first, now, directly, immediately)
5
in a flash(expression, idiom, adverb, directly, immediately)
5
on the spot(expression, idiom, adverb, directly, immediately)
5
right now(expression, idiom, adverb, now, directly)
5
straight(adverb, directly, immediately)
5
without hesitation(expression, adverb, straight, directly, immediately)
4
currently(adverb, directly, immediately, at once, right away)
4
pdq(now, directly, immediately, rapidly, today)
4
precipitously(adverb, suddenly)
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APASmart Define. (2016). instantly thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/instantly/thesaurus/synonyms
ChicagoSmart Define. 2016. "instantly thesaurus" https://smartdefine.org/instantly/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, instantly thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/instantly/thesaurus/synonyms>.
MLASmart Define. "instantly thesaurus" 24 February 2016. Web. 21 September 2026. <https://smartdefine.org/instantly/thesaurus/synonyms>