the trait of acting unpredictably and more from whim or caprice than from reason or judgment
同义词：arbitrariness??/??whimsicality??/??whimsy??/??whimsey??/??capriciousness
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。