History
History
History
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Meaning:

decided by personal opinion and not because of a rule or for a reason

whimsical, chance

capricious discretionary erratic frivolous inconsistent irrational irresponsible random subjective unreasonable willful approximate fanciful injudicious offhand optional supercilious superficial unaccountable unscientific wayward
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ARBITRARY as in Wiktionary
ARBITRARY as in Wikipedia