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deranged

adjective
 
 
/dɪˈreɪndʒd/

Definition

completely unable to think clearly or behave in a controlled way, especially because of mental illness: a deranged criminal/mind/personality to be mentally derangedOf unsound mindStupid and silly derangement
 
 
/-mənt/ noun [U]
Mental and psychiatric disorders
(Definition of deranged adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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