caprice (suomeksi)

oikku (s: impulsive, seemingly unmotivated notion or action / möläysoikku / action / unpredictable or sudden condition, change, or series of changes / impulsive change of mind)
heitto (s: impulsive, seemingly unmotivated notion or action)
möläys (s: impulsive, seemingly unmotivated notion or action / möläys / notion)
oikullisuus (s: disposition to be impulsive)
oikuttelu (s: disposition to be impulsive)