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demented

demented

56 7.9
Very confused and behaving wildly because of mental illness
  • adjective
  • /dɪˈmɛntɪd/
  • Slur
translation icon : demente
  • The demented man wandered the streets, talking to himself in a wild and irrational manner.
  • demented patients
  • severely demented
  • demented and mentally ill

And it's because this is how demented and senile the man really is.

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Examples

  • And Paul Sheldon is pulled out of a car accident and resuscitated by a clearly demented fan.

    Academic text (2009)
  • Well, you get that we're talking about a very sick, demented individual here, right?

  • When I got there, he was on top of his desk, and this demented woman was telling him.

    Fiction book (1994)
  • Perhaps they think I am demented enough to jump off the ferry.

    Fiction book (1996)
  • I love you dearly, but you are a demented man.

  • Rowan, we are all a little bit sick, but nobody is that demented.

  • The two of you are majorly demented.

  • His eye wanders all over the place like some demented robot as he speaks.

    Fiction book (1992)
  • He's clearly confused, he's clearly demented and old.

  • He's one of these old Russian Jews, built like a rock, a demented individualist.

    Fiction book (1993)

Synonyms

crazy
vsdemented
  • Offensive
4.1

Mentally ill and unable to think or behave in a normal way

refers to mental illness with notably wild or irrational conduct
psychotic
vsdemented
  • Specialized
167 8.4

Not in touch with reality and may see or hear things that are not there

focuses more on mental illness plus wild, irrational actions
deranged
vsdemented
  • Offensive
77 7.6

Not able to think or act in a normal, reasonable way

is about mental illness combined with wild or irrational behaviour
disturbed
vsdemented
37 3.8

Feeling upset or worried and unable to think clearly

expresses full mental illness together with wild or irrational behaviour
unhinged
vsdemented
  • Offensive
27 7.8

A person who is not thinking or acting in a normal and safe way

emphasises illness with wild or irrational behaviour rather than only instability
maniacal
vsdemented
19 8.6

Very wild and out of control, seeming crazy

is similar but covers general mental illness rather than pure frenzy
unbalanced
vsdemented
14 5.7

A person who is not mentally well and often acts strangely

focuses on full mental illness together with irrational actions
crazed
vsdemented
1 5.0

Acting in a wild and uncontrolled way

describes mental illness and irrational behaviour not limited to frenzy
half-crazed
vsdemented
1 7.8

Very frightened or upset and not thinking clearly

is full mental illness often with clear wild behaviour
brainsick
vsdemented
  • Offensive
1 9.9

Being very ill in the mind and not thinking clearly

means the same illness but in modern, more direct wording
distempered
vsdemented
  • Archaic
8.5

In a disturbed state of mind or health

indicates mental illness with wild or irrational behaviour rather than general disorder

Antonyms

382 3.8

Based on clear thinking and facts rather than emotion

119 3.2

Having a healthy mind and able to think clearly

How Irrational

deranged
  • Offensive
77 7.6
insane
  • Slur
524 4.0
demented
  • Slur
56 7.9
disturbed
37 3.8
unsettled
22 4.2

Surface Forms

demented positive

Morphology

demented = dement (transparent) = dement + ed

Formed by the regular adjectival/past-participle suffix '-ed' on the verb 'dement', so its meaning ('made insane' / 'suffering from mental illness') follows standard derivation.

Etymology

The word demented comes from old Latin parts de- meaning 'away' and mens meaning 'mind', and you can see the same root in mental, so it originally meant 'out of the mind'. That's why demented describes someone who is not thinking clearly or who acts in a wild way.