disabuse
definition
to free someone from a mistaken belief or idea
example
I had to disabuse him of the idea that all cats are unfriendly.
synonyms
correctinformclarify
word origin — The word 'disabuse' comes from the prefix 'dis-' meaning 'to remove, opposite of' and 'abuse' from the Old French 'abuser,' meaning 'to deceive or mislead.'