delusion

Noun
  1. (psychology) an erroneous belief that is held in the face of evidence to the contrary (synset 114400260)
    referred to in: psychological science, psychology - the science of mental life
    is a type of: mental condition, mental state, psychological condition, psychological state - (psychology) a mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamic
    subtypes:
    • delusions of grandeur - a delusion (common in paranoia) that you are much greater and more powerful and influential than you really are
    • 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
    • hallucination - illusory perception; a common symptom of severe mental disorder
    • nihilism, nihilistic delusion - the delusion that things (or everything, including the self) do not exist; a sense that everything is unreal
    • somatic delusion - a delusion concerning the body image or parts of the body
    • zoanthropy - the delusion that you have assumed the form of an animal
    same as: psychotic belief
  2. A mistaken or unfounded opinion or idea (synset 105905340)
    "he has delusions of competence"; "his dreams of vast wealth are a hallucination"
    is a type of: misconception - an incorrect conception
    subtypes: disorientation, freak out - a wild delusion (especially one induced by a hallucinogenic drug)
    same as: hallucination
  3. The act of deluding;
    Deception by creating illusory ideas (synset 100756110)
    is a type of: deceit, deception, dissembling, dissimulation - the act of deceiving
    same as: head game, illusion

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