verb
to set free from mistakes (as in reasoning or judgment)
he was disabused of the notion that he was indispensable to the company
Synonyms: purge, undeceive, undelude
Related Word: amend, correct, emend, rectify, redress; disillude, disillusion, unblind; enlighten, illuminate; free, liberate, release
Idioms: open one's eyes, prick the ( or one's) bubble, puncture one's balloon, set ( or put) right ( or straight)
Contrasted words: deceive, delude, mislead; dupe, gull