paranoia

noun

para·​noia ˌper-ə-ˈnȯi-ə 

ˌpa-rə-

1

: mental illness characterized by systematized delusions of persecution or grandeur usually without hallucinations

Psychotic symptoms and paranoia persisted, and she continued to "find clues" of conspiracy against her.

—Helen K. Delichatsios et al.

2

: a tendency on the part of an individual or group toward excessive or irrational suspiciousness and distrustfulness of others

The members of America's racist right inhabit a murky world of conspiracy, suspicion, and paranoia.

—Wayne King

paranoiac

ˌper-ə-ˈnȯi-ˌak 

-ˈnȯi-ik

ˌpa-rə-

adjective or noun

or less commonly paranoic

ˌper-ə-ˈnȯi(-i)k 

-ˈnō-ik,

ˌpa-rə-

paranoically

ˌper-ə-ˈnȯi(-i)-k(ə-)lē 

-ˈnō-i-k(ə-)lē

ˌpa-rə-

adverb

Examples of paranoia in a Sentence

She was diagnosed with delusional paranoia.

I had to admit that my fears were just paranoia.

Recent Examples on the Web

Outdated technology, codenames, and paranoia have marked the better part of the last two decades at Google (GOOGL-2.04%). —Rocio Fabbro, Quartz, 20 Nov. 2024

In such a world, where no leaders could trust their most solid intelligence, their most primal instincts, or even the basis of reality itself, governments could not be blamed for acting from a position of maximum paranoia and suspicion. —Henry A. Kissinger, Foreign Affairs, 18 Nov. 2024

Filmmakers are still ripping off Rob Bottin's gruesomely inventive special effects, the excess of which contrasts with the tightly wound paranoia of the story. —Katie Rife, EW.com, 29 Oct. 2024

As her paranoia sets in, Margaret resorts to extreme measures to protect her two daughters. —Ralphie Aversa, USA TODAY, 2 Oct. 2024

Word History

Etymology

New Latin, from Greek, madness, from paranous demented, from para- + nous mind

First Known Use

1887, in the meaning defined at sense 1

Kids Definition

paranoia

noun

para·​noia ˌpar-ə-ˈnȯi-ə 

1

: a serious mental illness marked especially by feelings of persecution or an exaggerated sense of one's own importance usually without hallucinations

2

: a tendency toward being overly suspicious and distrustful

Medical Definition

paranoia

noun

para·​noia ˌpar-ə-ˈnȯi-ə 

1

: a psychosis characterized by systematized delusions of persecution or grandeur usually without hallucinations

2

: a tendency on the part of an individual or group toward excessive or irrational suspiciousness and distrustfulness of others