adjective

demented

dih-MEHN-tihd

adjective

Affected by dementia, or more informally, behaving in a wild or unhinged way.

"Her demented grandfather no longer recognised the house."

"The film has a demented sense of humour that some viewers love."

How to Use Demented

Learner’s notes

In plain EnglishEither clinically affected by dementia, or, informally, wildly irrational or crazy.

When to use it

The clinical sense is neutral and medical; the informal "crazy/wild" sense is casual and can sound flippant if used about real illness.

more demented comparative, most demented superlative

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Her _____ grandfather no longer recognised the house.

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