dis·a·buse (dĭs'ə-byōōz') tr.v.
dis·a·bused, dis·a·bus·ing, dis·a·bus·es To free from a falsehood or misconception: I must disabuse you of your feelings of grandeur.
[French désabuser : dés-, dis- + abuser, to delude (from Old French, to misuse; see abuse).]