12
abruptness(noun, shock, disappointment, surprise, wonder)
10
precipitateness(noun, thoughtlessness, impulsiveness)
10
precipitousness(noun, shock, disappointment, surprise, wonder)
8
precipitance(noun, shock, disappointment, thoughtlessness, wonder)
7
haste(noun, earliness)
7
precipitancy
5
hastiness(noun, thoughtlessness, rapidity, quickness, rashness)
4
quickness
4
rashness(noun, thoughtlessness, spontaneity, impulsiveness, impetuosity)
4
recklessness(noun, thoughtlessness, rashness, spontaneity, impulsiveness)
4
unexpectedness(noun, rapidity, quickness, abruptness)
3
alacrity
3
hurriedness
3
immediacy(noun, instantaneity)
3
impulsiveness(noun, thoughtlessness, rashness, spontaneity, impetuosity)
3
instantaneousness(noun, instantaneity)
3
precipitation(noun, shock, disappointment, thoughtlessness, wonder)
3
speed
3
surprise(noun, state, shock, amazing, revelation)
3
swiftness
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APASmart Define. (2015). suddenness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/suddenness/thesaurus/synonyms
ChicagoSmart Define. 2015. "suddenness thesaurus" https://smartdefine.org/suddenness/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, suddenness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/suddenness/thesaurus/synonyms>.
MLASmart Define. "suddenness thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/suddenness/thesaurus/synonyms>