The term 'arbitrary' can be defined as something that is based on random choice or personal whim, rather than any reason or system. The crossword solutions for this term include 'tyrannous' (9 letters), which means oppressive and CRUEL; 'INCONSISTENT' (12 letters), which means not being in agreement with itself; 'FRIVOLOUS' (9 letters), which means not having any serious purpose; 'DOMINEERING' (11 letters), which means having a tendency to dominate or boss others around; 'MAGISTERIAL' (11 letters), which means having an air of authority; 'FICKLE' (6 letters), which means changing frequently; 'OVERBEARING' (11 letters), which means excessively controlling; 'DICTATORIAL' (11 letters), which means ruling with absolute power; 'HAPHAZARD' (9 letters), which means done without any plan or organization; 'FORTUITOUS' (10 letters), which means happening by CHANCE; 'DOGMATIC' (8 letters), which means stubbornly adhering to a set of beliefs; 'ERRATIC' (7 letters), which means unpredictable; 'AUTOCRATIC' (10 letters), which means having absolute power; 'CRUEL' (5 letters), which means causing pain or suffering; 'CHANCE' (6 letters), which means happening by accident; 'DESPOTIC' (8 letters), which means having absolute power; and 'AUTHORITARIAN' (13 letters), which means favoring complete obedience to authority. All of these words describe something that is done without any logical reasoning or system, which is the definition of arbitrary.