Deranged

/dɪˈreɪndʒd/

Meaning & Definition

adjective
Mentally disturbed; insane.
The deranged man believed he was being followed by aliens.
Disturbed in order or functioning.
Her deranged thoughts made it difficult for her to concentrate on her work.
Disordered; disorganized.
The room was in a deranged state after the wild party.

Etymology

From the French 'déranger', meaning to disturb or disarrange.

Common Phrases and Expressions

deranged behavior
Actions or conduct that are wildly irrational or erratic.
deranged mind
A mental state characterized by severe disturbance.
deranged thoughts
Thoughts that indicate a lack of rationality or are indicative of a mental disorder.

Related Words

insanity
A mental illness of such a severe nature that a person cannot distinguish fantasy from reality.
madness
The state of being mentally ill, especially severely.

Slang Meanings

Out of one's mind.
After that incident, he started acting deranged.
Crazed or wild behavior.
She was acting totally deranged at the party.