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Definitions

paranoia

[par-uh-noi-uh] / ˌpær əˈnɔɪ ə /
NOUN
mental illness
Synonyms
STRONGEST
insanity mental disorder
WEAK
crack-up craziness delusions depression derangement disturbed mind emotional disorder emotional instability loss of mind lunacy madness maladjustment mania mental disease mental sickness nervous breakdown nervous disorder neurosis neurotic disorder phobia psychopathy psychosis sick mind troubled mind unbalanced mind unsoundness of mind

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.

The Citrini selloff latched onto the market’s recent paranoia that artificial intelligence could ravage established players in a range of industries.

From Barron's • Feb. 26, 2026

On the most fundamental level, the demand for privacy is not about paranoia or fear.

From Salon • Feb. 20, 2026

Whispers and doubts will be circulating all over Beijing and at every level of party and army leadership, checked only by the paranoia of officials fearing for their careers and lives.

From The Wall Street Journal • Jan. 26, 2026

It was something that he wanted the court to understand, that he'd been driven to "paranoia" by the constant attention surrounding him and his relationships.

From BBC • Jan. 21, 2026

I tried to quiet the paranoia and curled up on a wet towel, spread out on the deck of our yard.

From "Americanized" by Sara Saedi