disabuse (someone or oneself) of (something)(redirected from disabuse him of)
disabuse (someone or oneself) of (something)
To stop someone or oneself from continuing to believe something that is false. After being so ill, I had to disabuse myself of the notion that work is more important than my health.
disabuse someone of something
to rid someone of an incorrect idea. Please allow me to disabuse you of that assumption. Please disabuse yourself of the notion that you are perfect.