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paranoia

[par-uh-noi-uh] /ˌpær əˈnɔɪ ə/
noun
1.
Psychiatry. a mental disorder characterized by systematized delusions and the projection of personal conflicts, which are ascribed to the supposed hostility of others, sometimes progressing to disturbances of consciousness and aggressive acts believed to be performed in self-defense or as a mission.
2.
baseless or excessive suspicion of the motives of others.
Also, paranoea
[par-uh-nee-uh] /ˌpær əˈni ə/ (Show IPA)
.
Origin
1805-1815
1805-15; < Neo-Latin < Greek paránoia madness. See para-, nous, -ia
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for paranoea

paranoia

/ˌpærəˈnɔɪə/
noun
1.
a form of schizophrenia characterized by a slowly progressive deterioration of the personality, involving delusions and often hallucinations
2.
a mental disorder characterized by any of several types of delusions, in which the personality otherwise remains relatively intact
3.
(informal) intense fear or suspicion, esp when unfounded
Derived Forms
paranoiac (ˌpærəˈnɔɪɪk), paranoic (ˌpærəˈnəʊɪk) adjective, noun
Word Origin
C19: via New Latin from Greek: frenzy, from paranoos distraught, from para-1 + noos mind
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for paranoea

paranoia

n.

"mental disorder characterized by systematized delusions," 1848 (earlier paranoea 1811), from Greek paranoia "mental derangement, madness," from paranoos "mentally ill, insane," from para- "beside, beyond" (see para- (1)) + noos "mind."

FOR several years frequent descriptions have been given in the foreign journals, especially German and Italian, of the forms of insanity designated by the names Paranoia, Verrücktkeit, and Wahnsinn. ["Paranoia -- Systematized Delusions and Mental Degenerations," J. Séglas (transl. William Noyes), 1888]

Online Etymology Dictionary, © 2010 Douglas Harper
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paranoea in Medicine

paranoia par·a·noi·a (pār'ə-noi'ə)
n.

  1. A psychotic disorder characterized by systematized delusions, especially of persecution or grandeur, in the absence of other personality disorders.

  2. Extreme, irrational distrust of others.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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paranoea in Culture
paranoia [(par-uh-noy-uh)]

A form of psychosis marked by delusions of persecution and of grandeur. One who suffers from paranoia is paranoid.

Note: In popular terminology, a “paranoid” personality is characterized by suspicion and distrust of others; a tendency to look for hidden meaning behind other people's actions; argumentativeness; complaining; low tolerance for criticism; and a constant display of one's own talents, accomplishments, independence, and rationality.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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