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delusion

de·lu·sion [ di l'n ] (plural de·lu·sions)


noun 
Definition:
 
1. false belief: a persistent false belief held in the face of strong contradictory evidence, especially as a symptom of a psychiatric condition

2. mistaken notion: a false or mistaken belief or idea about something

[15th century. < Latin delusion-< past participle of deludere (see delude)]

de·lu·sion·al adjective

Word Usage

See allusion.

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