Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
capricious [kəˈprɪʃəs] adj (person) капри́зный*капри́зен , прихотли́вый/прихотли́в
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: