capricious

1 ENTRIES FOUND:
capricious /kəˈprɪʃəs/ adjective
capricious
/kəˈprɪʃəs/
adjective
Britannica Dictionary definition of CAPRICIOUS
[more capricious; most capricious] formal
1 
: changing often and quickly
especially : often changing suddenly in mood or behavior
2 
: not logical or reasonable : based on an idea, desire, etc., that is not possible to predict

— capriciously

adverb

— capriciousness

noun [noncount]