Demented

/dɪˈmɛntɪd/

Meaning & Definition

adjective

Driven to behave irrationally due to anger, distress, or excitement; mentally ill.

His demented behavior during the crisis alarmed everyone in the room.

Suffering from dementia; exhibiting symptoms of severe mental decline.

The demented patient struggled to remember the names of his own family members.

Extremely foolish or irrational.

The demented scheme to rob a bank with nothing but a toy gun was quickly abandoned.

From Latin 'dementatus', from 'de-' meaning 'from' + 'ment-' meaning 'mind'.

demented thinking

Thought processes that are irrational or disturbed.

demented behavior

Actions that are wildly erratic or uncontrolled.

dementia

A chronic or persistent disorder of the mental processes caused by brain disease or injury.

madness

The state of being mentally ill, especially severely.

Out of one's mind.

When he tried to dance on the table, everyone thought he was demented.

Acting wildly or irresponsibly.

She went full demented at the party, tackling everyone!