Definition of Demented

mental instability that drives strange behavior spurred by extreme emotions

Examples of Demented in a sentence

Kaia was heartbroken when she found out her grandfather was demented and would soon lose all memory of her.  🔊

After his demented wife purposely tried to burn their house down, he had her committed to a psychiatric ward.  🔊

He called the police on his demented neighbor after she started screaming at the hedges for no reason.  🔊

Whenever Nathan forgot to take his antipsychotic medication he became demented and alternated between talking to himself and punching the wall.  🔊

When Lily started losing track of time and forgetting loved ones’ name she realized she was becoming demented.  🔊

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