1. arbitrary的反义词

1. Dictators are arbitrary rulers.
    独裁者即独断专横的统治者。

2. She married an artist with an arbitrary character.
    她嫁给一个性格反复无常的艺术家。

3. My choice was quite arbitrary.
    我的选择相当随意。

4. arbitrary的近义词

4. This is an arbitrary decision.
    这是个武断的决定。

1. 武断的;任意的;任性的;主观的
    If you describe an action, rule, or decision as arbitrary, you think that it is not based on any principle, plan, or system. It often seems unfair because of this.

    e.g. Arbitrary arrests and detention without trial were common.
           随意逮捕和拘留屡见不鲜。

1. based on or subject to individual discretion or preference or sometimes impulse or caprice

    e.g. an arbitrary decision
           the arbitrary rule of a dictator
           an arbitrary penalty
           of arbitrary size and shape
           an arbitrary choice
           arbitrary division of the group into halves