Definition of contrary adjective from the Oxford Advanced Learner's Dictionary

  

contrary2

 adjective
adjective
BrE BrE//kənˈtreəri//
 
; NAmE NAmE//kənˈtreri//
 
(formal, disapproving)
 
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(usually of children) behaving badly; choosing to do or say the opposite of what is expected She was such a contrary child—it was impossible to please her.
See the Oxford Advanced American Dictionary entry: contrary