Synonyms|310Antonyms|60|Broader|1Narrower|2Related|257
1
perishable
1
place
1
posthaste(fast, rapid, swift)
1
precipitant(noun, instantaneity)
1
pro tem
1
pro tempore
1
promptly
1
pronto(fast, summary, rapid, swift, instant)
1
provisional
1
provisionary
1
provisory
1
quickening(adjective, sudden)
1
quickly
1
rashness(noun, impulsiveness)
1
reckless(adjective, sudden)
1
reflexive(adjective, impulsive)
1
reflexiveness(noun, impulsiveness)
1
rushing(adjective, sudden)
1
sharp(adjective, sudden)
1
shoot
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APASmart Define. (2016). instantaneous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/instantaneous/thesaurus/synonyms
ChicagoSmart Define. 2016. "instantaneous thesaurus" https://smartdefine.org/instantaneous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, instantaneous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/instantaneous/thesaurus/synonyms>.
MLASmart Define. "instantaneous thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/instantaneous/thesaurus/synonyms>