1 definition by CorcernedEx

Morbid jealousy, also known as Othello syndrome or delusional jealousy, is a psychiatric disorder in which a person holds a strong delusional belief that their spouse or sexual partner is being unfaithful without having any, very little, or insignificant proof to back up their claim. In morbid jealousy, the overall basis of the psychopathological experience is the preoccupation with a partner’s sexual infidelity. The most common cited forms of psychopathology in morbid jealousy are delusions and obsessions.
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by CorcernedEx November 5, 2013