Definition of deranged adjective from the Oxford Advanced American Dictionary

 

deranged

 adjective
adjective
NAmE//dɪˈreɪndʒd//
 
 
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unable to behave and think normally, especially because of mental illness mentally deranged a deranged attacker
derangement
 
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noun [uncountable] He seemed to be on the verge of total derangement.
See the Oxford Advanced Learner's Dictionary entry: deranged