1. arbitrariness的近义词

1. In scientific discussions it is essential to guard against subjectivism and arbitrariness.
    在科学讨论中要严防主观武断。

1. the trait of acting unpredictably and more from whim or caprice than from reason or judgment

    e.g. I despair at the flightiness and whimsicality of my memory

    Synonym: flightinesswhimsicalitywhimsywhimseycapriciousness