Simple past tense and past participle of disabuse.(verb)
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Use "disabused" in a sentence
"Most people wouldn't DEMAND to know someone's politics or candidate they voted for under the same rules you purport to apply to religious persons, so that they could be 'disabused' of their personal views and choices."
"Well, I'm pretty sure the people of Haditha have been "disabused" of that notion."
"It disabused the South African government of any notion that apartheid was selling abroad, and thus that they could shed their pariah status without putting an end to it."