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arbitrary

ar·bi·trar·y

arbitrary

 
 
pronunciation:
ar bih trer i
part of speech: adjective
definition: resulting from personal opinions, wishes, or feelings instead of from a rule or reason.
The jury's decision seemed unfair and arbitrary.
synonyms:
unreasonable
antonyms:
rational
similar words:
irrational
derivations: arbitrarily (adv.), arbitrariness (n.)