noun

dementia

dementia

Dementia affects memory and thinking skills.

Dementia affects memory and thinking skills.

She was diagnosed with early-onset dementia.

She was diagnosed with early-onset dementia.

to suffer from dementia to have the illness of dementia Many elderly people suffer from dementia.

Synonyms: senility, cognitive decline; Antonyms: lucidity, sanity

From Latin 'dementia', from 'de-' (away from) + 'mens' (mind). Literally 'out of one's mind'.

Break it down: 'de-' (away) + 'ment' (mind). It's a condition where the mind goes 'away'.

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