Synonyms of 'discretionary'
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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.
Arbitrary arrests were common.
Video: pronunciation of 'discretionary'
Thesaurus for discretionary from the Collins English Thesaurus
Discretionary things are not fixed by rules but are decided on by people in authority, who consider each individual case .