delusion
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source: Ninja Scroll GIF - Find & Share on GIPHY
noun
an idiosyncratic belief or impression that is firmly maintained despite being contradicted by what is generally accepted as reality or rational argument, typically a symptom of mental disorder:
«…という» 思い違い, 誤った考え «that節» ; 〘医〙 妄想(→ illusion)
e.g. the delusion of being watched.
the action of deluding or the state of being deluded:
惑わす［される］こと
e.g. what a capacity television has for delusion.
PHRASES
delusions of grandeur
a false impression of one's own importance.
ORIGIN
late Middle English (in the sense ‘act of deluding or of being deluded’): from late Latin delusio(n-), from the verb deludere (see delude).