flightiness, arbitrariness, whimsicality, whimsy, whimsey, capriciousness(noun)
the trait of acting unpredictably and more from whim or caprice than from reason or judgment
"I despair at the flightiness and whimsicality of my memory"
The quality or state of being arbitrary.
the quality of being arbitrary; despoticalness; tyranny
Arbitrariness is a term given to choices and actions subject to individual will, judgment or preference, based solely upon an individual's opinion or discretion. Arbitrary decisions are not necessarily the same as random decisions. For example, during the 1973 oil crisis, Americans were allowed to purchase gasoline only on odd-numbered days if their license plate was odd, and on even-numbered days if their license plate was even. The system was well-defined and not random in its restrictions; however, since license plate numbers are completely unrelated to a person's fitness to purchase gasoline, it was still an arbitrary division of people. Similarly, schoolchildren are often organized by their surname in alphabetical order, a non-random yet still arbitrary method, at least in cases where surnames are irrelevant.
The numerical value of arbitrariness in Chaldean Numerology is: 5
The numerical value of arbitrariness in Pythagorean Numerology is: 9