- 1(of an action, a decision, a rule, etc.) not seeming to be based on a reason, system, or plan and sometimes seeming unfair The choice of players for the team seemed completely arbitrary. He makes unpredictable, arbitrary decisions.
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- 2(formal) using power without restriction and without considering other people the arbitrary powers of officials
NAmE//ˌɑrbəˈtrɛrəli//
adverb The leaders of the groups were chosen arbitrarily. The political frontiers in Africa were often arbitrarily drawn up by the old colonial powers. NAmE//ˈɑrbəˌtrɛrinəs//
noun [uncountable] Court officials were suspected of arbitrariness and personal bias.See arbitrary in the Oxford Advanced Learner's DictionaryCheck pronunciation: arbitrary