Synonyms|65Antonyms|0|Broader|0Narrower|0Related|14
1
unforeseen(violent, fast, quick)
1
unreflecting(violent, fierce, ardent, impulsive, rash)
1
unrestrained(violent, fierce, ardent, impulsive, rash)
1
vehement(violent, fierce, ardent, impulsive, rash)
1
violent(fast, fierce, quick, ardent, impulsive)
1
willful(violent, fast, quick)
1
without warning(expression, violent, fast, quick)
0
ardent(violent, fierce, impulsive, rash, unthinking)
0
discontinuous
0
electricity
0
fierce(violent, ardent, impulsive, rash, unthinking)
0
hotheaded(impulsive, rash, unthinking)
0
immediate
0
impulsive(rash, unthinking)
0
instant
0
instantaneous
0
momentary
0
off the hip(expression, idiom, violent, fast, quick)
0
off the top of head(expression, idiom, violent, fast, quick)
0
off top of head(expression, idiom, violent, fast, quick)
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APASmart Define. (2013). subitaneous thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/subitaneous/thesaurus/synonyms
ChicagoSmart Define. 2013. "subitaneous thesaurus" https://smartdefine.org/subitaneous/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, subitaneous thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/subitaneous/thesaurus/synonyms>.
MLASmart Define. "subitaneous thesaurus" 18 May 2013. Web. 21 September 2026. <https://smartdefine.org/subitaneous/thesaurus/synonyms>