demented
adj. C1 Advanced US //dɪˈmɛntɪd// UK //dɪmˈɛntɪd// de·ment·ed
adj. extremely strange, crazy, or violent. You use this to describe someone who has lost their mind or a plan that is very bad and dangerous.
adj. characterised by extreme mental disorder or irrationality; extremely cruel or violent. Often used to describe a person's mental state or a plan that is highly misguided.
He had a demented look in his eyes.
The movie features a demented villain who plans to destroy the city for no reason.
The critic argued that the artist's later works were a demented response to the political chaos of the era, reflecting a deep sense of despair and isolation.
Past participle of dement + -ed, from Latin dēmentāre.