arbitrary

US /ˈɑrbɪˌtrɛri/

UK /ˈɑ:bitrəri/

B1TOEIC
adj.Adjective(Of decisions) unsupported; without any evidence
The company's decision to fire the loyal workers was arbitrary, there's no reason to do so
adj.AdjectiveBased on random choice or personal whim, rather than any reason or system.
The decision to close the factory seemed completely arbitrary.
adj.AdjectiveUnreasonable; unsupported.
Arbitrary rules often lead to dissatisfaction among employees.

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