What is another word for arbitrary?

Need synonyms for arbitrary? Here's a list of words from our thesaurus that you can use instead.

Based on random choice or personal whim, rather than any reason or system
“Any system of classification is arbitrary and thus frail, subject to the contradictions of experience.”
Exercising power or authority without interference by others
“Thus a major new avenue of arbitrary government power would be opened up.”
Impulse rather than reason
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