Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “demented”

demented

adjective uk   /dɪˈmen.tɪd/ us    /-t̬ɪd/
unable to think or act clearly because you are extremely worried, angry, or excited by something: She was nearly demented with worry when her son didn't come home. old-fashioned or informal crazy: The man is demented - he's going to wreck the whole operation.
dementedly
adverb uk   /-li/ us  
(Definition of demented from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of demented?
Browse related topics

You are looking at an entry to do with Anxious and worried, but you might be interested in these topics from the Anxiety and worry topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “demented” in other dictionaries

Word of the Day

wave

to raise your hand and move it from side to side as a way of greeting someone, telling someone to do something, or adding emphasis to an expression

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

silver splicer noun

November 17, 2014
informal a person who marries in later life Newly retired and now newlywed – rise of the ‘silver splicers’ Reaching pension age becomes a trigger to tie the knot as baby-boomers begin to redefine retirement

Read More