Etymograph

English

demented

Demented comes from Latin demento ‘to make mad or crazy, drive crazy’, and goes back to Proto-Indo-European *men-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*men-root as named
  2. Latinc. 75 BCE–200 CEdementoas dēmentāre‘to make mad or crazy, drive crazy’
  3. Englishearliest quotation c. 1990demented

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*men-root as named
  2. Latinc. 75 BCE–200 CEdementoas dēmentāre‘to make mad or crazy, drive crazy’
  3. Englishearliest quotation c. 1990demented

Earliest quotation: c. 1990, How to Play Super C, Konami: “One of these new recruits is Jagger Froid, a…”

Formed from dement + -ed

Proto-Indo-European *men- ‘to think, mind’

…

Latin mēns ‘mind’

Latin dēmēns ‘demented, mad’

Vulgar Latin dementare ‘to deceive’

Middle French dement

English dement

Linked words

through Proto-Indo-European *men-

money, music, mind, amount, mouth, museum, remain, mountain, auto, min, monitor, comment, monster, mount, permanent, mental, mention, monetary, monk, maya, demonstration, mint, amnesty, muse, mosaic, summon, ming, mas, mandarin, monastery, mania, monstrous, prominence, monument, amnesia, mentor, imminent, manic, mantra, monte, 127 more

Today it means

adj Insane; mentally ill.

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *men- / demented