delusional




WordReference Random House Learner's Dictionary of American English © 2025
de•lu•sion /dɪˈluʒən/USA pronunciation   n. 
  1. the state of being deluded:[uncountable]suffering from delusion.
  2. Psychiatry a false belief or opinion:[countable]delusions of grandeur.
de•lu•sive /dɪˈlusɪv/USA pronunciation  adj. See -lud-.
    See illusion.
WordReference Random House Unabridged Dictionary of American English © 2025
de•lu•sion  (di lo̅o̅′zhən),USA pronunciation n. 
  1. an act or instance of deluding.
  2. the state of being deluded.
  3. Psychiatrya false belief or opinion:delusions of grandeur.
  4. Psychiatrya fixed false belief that is resistant to reason or confrontation with actual fact:a paranoid delusion.
  • Latin dēlūsiōn- (stem of dēlūsiō), equivalent. to dēlūs(us) (past participle of dēlūdere; see delude) + -iōn- -ion
  • late Middle English 1375–1425
de•lu′sion•al, de•lu′sion•ar′y, adj. 
    • 1.See corresponding entry in Unabridged deception. See illusion. 
'delusional' also found in these entries (note: many are not synonyms or translations):
fixed idea - folie à deux - grandiose - theomania

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