Словарь синонимов английского языка - capricious

(adj) whimsical, erratic, flighty, fickle, mercurial, unsteady, variable, unstable, wayward, unpredictable, undependable, changeable, impulsive, crotchety, quirky, unreliable, inconstant, fanciful, wanton: His decisions are capricious and not based on sound judgement. The weadher in March is capricious: as Mark Twain said, if you don't like it, just wait five minutes.