ca·pri·cious /kəˈprɪʃəs, ˈpri-/
  (a.)反復無常的,善變的,任性的
  Ca·pri·cious a.  Governed or characterized by caprice; apt to change suddenly; freakish; whimsical; changeable. “Capricious poet.” --Shak. “Capricious humor.” --Hugh Miller.
     A capricious partiality to the Romish practices.   --Hallam.
  Syn: -- Freakish; whimsical; fanciful; fickle; crotchety; fitful; wayward; changeable; unsteady; uncertain; inconstant; arbitrary.
  -- Ca*pri*cious*ly, adv. -- Ca*pri*cious*ness, n.
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  capricious
       adj 1: changeable; "a capricious summer breeze"; "freakish weather"
              [syn: freakish]
       2: 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" [syn: impulsive, whimsical]