adj
deranged
dih-RAYNJD
adj
1
Mentally disturbed or behaving in a wild, irrational way.
"Witnesses described the attacker as deranged and shouting incoherently."
2
Not working properly; thrown into disorder.
"The old clock's deranged mechanism made it chime at random hours."
How to Use Deranged
Learner’s notesIn plain EnglishMentally unbalanced, or (less commonly) knocked out of proper working order.
When to use it
Strong, somewhat dated word for describing a person's mental state — often used dramatically rather than clinically.
Word Forms
more deranged comparative, most deranged superlative
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Etymology
From French derange, past participle of deranger, "to disturb the order of."