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Webster's New World College Dictionary » arbitrary
arbitrary 
arbitrary definition
ar·bi·trary (är′bə trer′ē)
adjective
- not fixed by rules, but left to one's judgment or choice; discretionary arbitrary decision, arbitrary judgment
- based on one's preference, notion, whim, etc.; capricious young children and their arbitrary rules for games
- absolute; despotic
Etymology: L arbitrarius < arbiter, arbiter
Related Forms:
- arbitrarily ar′·bi·trar′·ily adverb
- arbitrariness ar′·bi·trar′i·ness noun
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