53 entries under instantaneity topic. ×

3
momentary
3
presto
2
instantaneously(adverb, earliness)
2
quick as lightning(expression, idiom)
2
quick as thought(expression, idiom)
2
right away(verb, expression, adverb, phrasal verb, time)
1
discontinuous
1
extempore
1
instanter
1
precipitous
0
all at once(expression, idiom)
0
at a stroke(expression, idiom)
0
at one jump(expression, idiom)
0
flash of lightning(expression, idiom)
0
haste
0
in a moment(expression, idiom)
0
in a trice(expression, idiom)
0
in no time(expression, idiom)
0
in one's tracks(expression, idiom)
0
just then(expression, idiom)
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APASmart Define. (2015). instant thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/instant/thesaurus/synonyms
ChicagoSmart Define. 2015. "instant thesaurus" https://smartdefine.org/instant/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, instant thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/instant/thesaurus/synonyms>.
MLASmart Define. "instant thesaurus" 3 August 2015. Web. 26 September 2026. <https://smartdefine.org/instant/thesaurus/synonyms>