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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.

As the obstacles mount against Kornev, his paranoia grows, leading to fleeting moments of surrealism.

From Los Angeles Times • Mar. 26, 2026

In a sign of his deep paranoia, he told Fox News in 2025 he is so afraid of being carjacked that he doesn’t wear a seatbelt, even though carjacking rates are rapidly falling.

From Salon • Mar. 18, 2026

"I had paranoia, delusions. I had my first full-on episode when I was 15."

From BBC • Feb. 6, 2026

Kane and Thompson said that Minneapolis had been beset by paranoia following the start of the anti-immigration operation.

From Barron's • Jan. 28, 2026

All of these fears, tinged with paranoia, seemed to Bobby to justify constant concern for his life.

From "Endgame" by Frank Brady