arbitrary [ˈɑ:bɪtrəri]

以下由轻松背单词网站提供

adj.任意的，任性的，主观的；专断的，武断的

based on chance rather than being planned or based on reason

A good judge does not make arbitrary decisions. 一个优秀的法官不会作武断的判决。
You can make an arbitrary choice. 你可以随便做选择。