önkényes

Decided or chosen according to personal preference, chance, or convenience rather than according to clear reason, rules, or a consistent system.

(Of the use of power or authority) based only on the will of the person in power, not controlled by laws, rules, or fairness.

Describing decisions, actions, or rules that seem to be chosen for no good or consistent reason, and therefore appear unfair or arbitrary.

(Of units, scales, or reference points in science or engineering) Chosen for convenience and comparison, not tied to a fixed, absolute physical standard.

Likely to change suddenly or act in an unpredictable way, based on personal whim rather than reason or consistent rules.