Capriccios are impulsive or whimsical acts or ideas that can sometimes be unpredictable. There are several different synonyms for this word that can be used depending on the context of the situation. One of the most common substitutes for capriccios is "fickleness," which highlights the lack of consistency or commitment in someone's decision-making. Another synonym is "inconsistency," which refers to the absence of a predictable pattern or theme. Other possible alternatives include "whimsy," "caprice," and "impulsiveness." These words all share a similar meaning as capriccios and can be used interchangeably in many situations to convey a sense of unpredictability or fanciful imagination.