IPA: /kəˈprɪʃəsli/
KK: /kəˈprɪʃəsli/
In a way that is unpredictable or changes suddenly without reason.
She capriciously decided to change her vacation plans at the last minute.
Capriciously → It is formed from "caprice" (from French *caprice*, meaning a sudden change of mood or behavior) and the suffix "-ously" (meaning in a manner of). The word "capriciously" means in a manner characterized by sudden changes in mood or behavior.
Think of 'caprice' as a sudden change, and remember that 'capriciously' means acting in a way that is unpredictable or whimsical.