Synonyms|744Antonyms|104|Broader|6Narrower|5Related|904

61 entries under instant topic. ×

1
cracking(summary, abrupt, rapid, unexpected)
1
cursory(fast, quick, brief, speedy, swift)
1
double-quick(summary, abrupt, rapid, unexpected)
1
fleet-footed(summary, abrupt, rapid, unexpected)
1
flying(fast, brief, summary, abrupt, swift)
1
in nothing flat(expression, idiom, summary, abrupt, unexpected)
1
like crazy(expression, summary, abrupt, rapid, unexpected)
1
like mad(expression, summary, abrupt, rapid, unexpected)
1
nimble(adjective, fast, summary, rapid, swift)
1
perfunctory(fast, quick, rapid, speedy, swift)
1
pronto(fast, quick, summary, abrupt, speedy)
1
rushed(adjective, quick, summary, rapid, swift)
1
screaming(summary, abrupt, rapid, unexpected)
1
shaking a leg(expression, idiom, summary, abrupt, unexpected)
1
short-lived(brief, summary, abrupt, rapid, unexpected)
1
spanking(summary, abrupt, rapid, unexpected)
1
speedball(summary, abrupt, rapid, unexpected)
1
very fast(expression, summary, abrupt, rapid, unexpected)
1
winged(fast, summary, rapid, swift)
0
boiled down(expression, rapid, swift)
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APASmart Define. (2016). sudden thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sudden/thesaurus/synonyms
ChicagoSmart Define. 2016. "sudden thesaurus" https://smartdefine.org/sudden/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sudden thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sudden/thesaurus/synonyms>.
MLASmart Define. "sudden thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/sudden/thesaurus/synonyms>