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



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 Originlate 18th cent.: from French déranger, from Old French desrengier, literally ‘move from orderly rows’ + -ed.
See the Oxford Advanced American Dictionary entry: deranged