adj .
likely to change for no good reason 별다른 이유도 없이 잘 변하는, 변덕스러운

• Students are fickle, one day they love you, the next day they attach a pipe bomb to the chassis of your car.
  학생들은 변덕스럽다. 오늘은 너를 좋다고 하다가도 다음 날에는 네 새 차 섀시에 파이프 폭탄을 붙여놓을지도 모른다.
• The weather had been fickle all day ; one moment the sun was shining, the next it was pouring down rain.
• The Taylors were so fickle that their architect finally told them he would quit the job if they make any more changes in the plans for their new house.
  테일러씨 가족들이 너무나 변덕을 부렸기 때문에, 새 집을 짓기 위해 고용된 건축가는 마침내 설계도를 더 이상 바꾸면 아예 집 짓는 일을 그만두겠다고 말했다.
• I wish my dog loved me, but she's so fickle that she'd go off with anyone who offered her a day biscuit.