[all non-clinical uses originated in 1960s hippie n.2 (3) era, often occasioned by an excess of drug use; ult. SE paranoia, ‘functional psychosis characterized by delusions of grandeur and persecution, but without intellectual deterioration’ (C. Rycroft, A Critical Dict. of Psychoanalysis, 1968)]
frightened, worried, disturbed.
Gandalf’s Garden 6 n.d. 11: paranoid: of someone suffering from persistent delusions, i.e. grandeur or persecution, etc., mental disorder often with hallucinations. Now loosely applied to anyone agitated, upset, annoyed, or emotionally reactive.
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