Not based on random choice or personal whim; rather based on reason or fair judgment.

मनमाना नहीं

English Usage: The unarbitrary rules of the game ensured fairness for all players.

Hindi Usage: खेल के मनमाना नहीं नियम सभी खिलाड़ियों के लिए निष्पक्षता सुनिश्चित करते थे।

The quality of not being arbitrary; based on reason rather than random choice.

मनमाना नहीं होना

English Usage: The unarbitraryness of the decision-making process was appreciated by all members.

Hindi Usage: निर्णय प्रक्रिया की मनमाना नहीं होना सभी सदस्यों द्वारा सराहना की गई।