noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/dɪˈmɛnʃə/
UK:Recorded audio is listed in the source snapshot.
rhymes with -ɛnʃə
CMU ARPABET:D IH0 M EH1 N SH IY0 AH0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A progressive decline in cognitive function due to damage or disease in the brain beyond what might be expected from normal aging. Areas particularly affected include memory, attention, judgement, language and problem solving.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
Topics: medicine, pathology, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
Madness or insanity.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
mental deterioration of organic or functional origin
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Etymology tree Proto-Indo-European *de Proto-Indo-European *-h1 Proto-Indo-European *déh1 Proto-Italic *dē Latin dē Latin dē- Proto-Indo-European *men- Proto-Indo-European *-tis Proto-Indo-European *méntis Proto-Italic *mentis Latin mēns Latin dēment- Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -ius Latin -ia Latin dēmentiabor. English dementia Borrowed from Latin dēmentia.
Across languages
Translations
56 source translations are retained for this English entry.
Arabic:
خَرَف
(ḵaraf)
— progressive decline in cognitive function
Azerbaijani:
demensiya
— progressive decline in cognitive function
Bulgarian:
деме́нция
(deméncija)
— progressive decline in cognitive function
Catalan:
demència
— progressive decline in cognitive function
Chinese Mandarin:
癡呆 /痴呆
(chīdāi)
— progressive decline in cognitive function
Chinese Mandarin:
失智症
(shīzhìzhèng)
— progressive decline in cognitive function
Cornish:
demencya
— progressive decline in cognitive function
Czech:
demence
— progressive decline in cognitive function
Danish:
demens
— progressive decline in cognitive function
Dutch:
dementie
— progressive decline in cognitive function
Esperanto:
demenco
— progressive decline in cognitive function
Finnish:
dementia
— progressive decline in cognitive function
French:
démence
— progressive decline in cognitive function
Georgian:
დემენცია
(demencia)
— progressive decline in cognitive function
German:
Demenz
— progressive decline in cognitive function
Greek:
άνοια
(ánoia)
— progressive decline in cognitive function
Hindi:
मनोभ्रंश
(manobhrañś)
— progressive decline in cognitive function
Hungarian:
elbutulás
— progressive decline in cognitive function
Icelandic:
heilabilun
— progressive decline in cognitive function
Ido:
dementeso
— progressive decline in cognitive function
Irish:
néaltrú
— progressive decline in cognitive function
Italian:
demenza
— progressive decline in cognitive function
Japanese:
認知症
(ninchishō)
— progressive decline in cognitive function
Kazakh:
ақыл кемдігі
(aqyl kemdıgı)
— progressive decline in cognitive function
Korean:
치매
(chimae)
— progressive decline in cognitive function
Lithuanian:
silpnaprotystė
— progressive decline in cognitive function
Māori:
mate wareware
— progressive decline in cognitive function
Māori:
mate korongenge
— progressive decline in cognitive function
Persian:
زوال عقل
(zavâl-e 'aql)
— progressive decline in cognitive function
Persian:
دمانس
(demâns)
— progressive decline in cognitive function
Polish:
demencja
— progressive decline in cognitive function
Polish:
otępienie
— progressive decline in cognitive function
Portuguese:
demência
— progressive decline in cognitive function
Russian:
деме́нция
(deméncija)
— progressive decline in cognitive function
Russian:
слабоу́мие
(slaboúmije)
— progressive decline in cognitive function
Spanish:
demencia
— progressive decline in cognitive function
Swedish:
demens
— progressive decline in cognitive function
Turkish:
demans
— progressive decline in cognitive function
Ukrainian:
деме́нція
(deméncija)
— progressive decline in cognitive function
Ukrainian:
слабоу́мство
(slaboúmstvo)
— progressive decline in cognitive function
Vietnamese:
suy giảm trí nhớ
— progressive decline in cognitive function
Vietnamese:
chứng mất trí
— progressive decline in cognitive function
Welsh:
gorffwylltra
— progressive decline in cognitive function
Bulgarian:
слабоу́мие
(slaboúmie)
— madness or insanity
Chinese Mandarin:
瘋病 /疯病
(fēngbìng)
— madness or insanity
Esperanto:
demenco
— madness or insanity
French:
démence
— madness or insanity
Greek:
άνοια
(ánoia)
— madness or insanity
Hungarian:
ostobaság
— madness or insanity
Lithuanian:
demencija
— madness or insanity
Portuguese:
demência
— madness or insanity
Portuguese:
insanidade
— madness or insanity
Portuguese:
loucura
— madness or insanity
Russian:
слабоу́мие
(slaboúmije)
— madness or insanity