determined by chance or impulse or whim rather than by necessity or reason; "a capricious refusal"; "authoritarian rulers are frequently capricious"; "the victim of whimsical persecutions" 同义词:impulsive, whimsical,
changeable; "a capricious summer breeze"; "freakish weather" 同义词:freakish,
百科解释
Given to sudden and unaccountable changes of mood or behavior.