30 entries under sudden topic. ×

12
quick(adjective, time, hot, speedy, superficial)
11
hasty(adjective, time, slight, hot, limited)
6
impulsive(adjective, quick, unpredictable, speedy, capricious)
6
meteoric(adjective, brief, immediate, instant)
5
abrupt(adjective, quick, speedy, immediate, instant)
5
flashing(noun, adjective, hot, quick, nimble)
5
hurried(adjective, time, hot, quick, speedy)
5
instantaneous(adjective, transient, transientness)
4
brisk(adjective, hot, quick, nimble, speedy)
4
fast(adjective, quick, rapid, hasty, superficial)
4
swift(adjective, hot, quick, speedy, hasty)
3
headlong(adjective, quick, speedy, hurried)
3
immediate(adjective, quick, rapid, speedy, instant)
3
impetuous(adjective, quick, speedy, hurried)
3
out of the blue
2
accelerated(adjective, hot, quick, rapid, speedy)
2
brash(adjective, quick, speedy, hurried)
2
brusque
2
rapid(adjective, hot, quick, speedy, hasty)
2
rash(adjective, quick, speedy, hurried)
<12>
10 years ago|15k views|share |citing 
APASmart Define. (2016). fleeting thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/fleeting/thesaurus/synonyms
ChicagoSmart Define. 2016. "fleeting thesaurus" https://smartdefine.org/fleeting/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, fleeting thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/fleeting/thesaurus/synonyms>.
MLASmart Define. "fleeting thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/fleeting/thesaurus/synonyms>