Definition of ARBITRARY

having or showing a tendency to force one's will on others without any regard to fairness or necessity <an arbitrary piano teacher who makes all her students do the same exercises over and over again>
exercising power or authority without interference by others <a nation with no tradition of democracy, only a long history of arbitrary rulers>
Synonyms arbitrary, autocratic (also autocratical), czarist (also tsarist or tzarist), despotic, dictatorial, monocratic, tyrannical (also tyrannic), tyrannous
Antonyms limited

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