Synonyms|744Antonyms|104|Broader|6Narrower|5Related|904
2
quickly
2
rapidly
2
rude
2
sensational(affected, melodramatic, theatrical)
2
severe
2
shock(noun, inexpectation)
2
striking(adjective, affected, melodramatic, theatrical)
2
summary(rapid, swift, instant, transientness)
2
surprisingly(adverb, short, suddenly, unexpectedly, unawares)
2
thoughtless(adjective, quick, impulsive, rash, reckless)
2
unanticipatedly(adverb, suddenly, unexpectedly, unawares, abruptly)
2
unaware(suddenly, unexpectedly, unawares, abruptly)
2
unconsidered(noun, passionate, violent, careless, casual)
2
unhoped for(verb, phrasal verb, inexpectation)
2
unlooked for(verb, phrasal verb, inexpectation)
2
unthinking(adjective, violent, careless, fierce, casual)
2
unwonted
1
ASAP(fast, rapid, swift)
1
abet
1
abundance
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APASmart Define. (2016). sudden thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sudden/thesaurus/synonyms
ChicagoSmart Define. 2016. "sudden thesaurus" https://smartdefine.org/sudden/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, sudden thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sudden/thesaurus/synonyms>.
MLASmart Define. "sudden thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/sudden/thesaurus/synonyms>