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Noun: arbitrariness  'aar-bu,tre-ree-nus [N. Amer], 'aa-bi-tree-nus or ,aa-bu'tre-ree-nus [Brit]
  1. The trait of acting unpredictably and more from whim or caprice than from reason or judgment
    "I despair at the arbitrariness and whimsicality of my memory";
    - flightiness, whimsicality, whimsy, whimsey, capriciousness

Type of: irresponsibility, irresponsibleness

Encyclopedia: Arbitrariness