27 entries under instantaneity topic. ×

37
at once(noun, expression, idiom, adverb, time)
32
instantaneously(adverb, first, directly, quickly, haste)
24
right away(noun, verb, expression, adverb, phrasal verb)
8
in no time(noun, expression, idiom, first, freely)
7
instanter
7
suddenly(adverb, directly, rapidly, instantly, promptly)
6
on the spot(expression, idiom, adverb, earliness)
5
like a shot(expression, idiom, adverb, quickly, rapidly)
3
early(adjective, haste)
3
presto(first, now, directly, quickly, rapidly)
2
extempore
2
in a moment(expression, idiom)
2
in a trice(noun, expression, idiom, adverb)
2
just then(expression, idiom)
2
subito
1
all at once(expression, idiom, haste)
1
haste
0
at a stroke(expression, idiom)
0
at one jump(expression, idiom)
0
in one's tracks(expression, idiom)
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APASmart Define. (2016). immediately thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/immediately/thesaurus/synonyms
ChicagoSmart Define. 2016. "immediately thesaurus" https://smartdefine.org/immediately/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, immediately thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/immediately/thesaurus/synonyms>.
MLASmart Define. "immediately thesaurus" 24 February 2016. Web. 24 September 2026. <https://smartdefine.org/immediately/thesaurus/synonyms>