English

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

 

deranged

 adjective
adjective
BrE BrE//dɪˈreɪndʒd//
 
; NAmE NAmE//dɪˈreɪndʒd//
 
Mental and emotional problems
 
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unable to behave and think normally, especially because of mental illness mentally deranged a deranged attacker At first I thought he was deranged. The plan seemed to be the product of a deranged mind. See related entries: Mental and emotional problems Word Origin late 18th cent.: from French déranger, from Old French desrengier, literally ‘move from orderly rows’ + -ed.
See the Oxford Advanced American Dictionary entry: deranged