noun
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the act of deranging or state of being deranged
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disorder or confusion
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psychiatry a mental disorder or serious mental disturbance
Etymology
Origin of derangement
From the French word dérangement, dating back to 1730–40. See derange, -ment
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
You might say he has trade-deficit derangement syndrome, or TDDS.
From The Wall Street Journal ● Jul. 22, 2026
“The way Bluesky posts about Graham Platner is on a level of derangement only matched by Flat Earthers,” the author Eoin Higgins said.
From Slate ● Jul. 14, 2026
In the 15th century, the befuddled derangement of the English King Henry VI — possibly a hereditary schizophrenia — helped to light the fuse of the Wars of the Roses.
From Los Angeles Times ● Mar. 24, 2024
The chair of the judges, Tate Britain director Alex Farquharson, said the work was "bold" and "engaging" with a sense of "delirious derangement".
From BBC ● Dec. 5, 2023
Everyone could hear, couldn’t they? the derangement in his voice.
From "A Separate Peace" by John Knowles
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
