paranoid
paranoid , adjective
1.
(Medicine) Affected with paranoia; as, a paranoid schizophrenic.
2.
Suffering from delusions of being persecuted by the conspiratorial actions of others; having an unwarranted suspicion of the motives of others; -- used loosely in a negative sense, not as a medical term; as, just because you're paranoid doesn't mean they are not out to get you. [Colloquial]