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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.

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

From Salon • Feb. 20, 2026

Is it a case of paranoia thanks to new motherhood?

From Los Angeles Times • Feb. 8, 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

It’s like paranoia in reverse when people are really calling you insulting things and you deliberately pretend they aren’t.

From "The Pigman" by Paul Zindel