Definition of "delusions of persecution" []

• A delusion (common in paranoia) that others are out to get you and frustrate and embarrass you or inflict suffering on you; a complicated conspiracy is frequently imagined (noun)

WordNet. Princeton University. 2010.

• "The psychiatric history documented a pattern of progressive mental deterioration including delusions of persecution and probable auditory hallucinations combined with evidence of a premorbid schizoid or borderline personality type."
• "For several years before the date which I would fix as that of the climax of her mental trouble she had been occasionally taking henbane or hyoscyamus to allay pain and excitability and pretty frequently morphia to compel sleep, and it is a secondary action of the latter drug to induce unfounded suspicions and even delusions of persecution in those who habitually indulge in it."