Meaning & use

delusion

noun·Advanced

A false belief held firmly despite clear evidence that it is not true.

See it in a sentence

His delusion that he could win the lottery led him to overspend recklessly.

The patient's delusions about being followed worried his family greatly.

A note on using this word

In psychology it refers to a fixed false belief resistant to reasoning, distinct from an ordinary mistaken idea.

Words with a similar meaning

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