Answer: unlearn

AnswerCrossword Clue
UNLEARN

Deliberately lose, as prejudices

UNLEARN

Lose knowledge of

UNLEARN

Break, as a habit

UNLEARN
Nullify a wrong method.
UNLEARN
Forget
UNLEARNGet out of the habit of
UNLEARNDiscard knowledge of
UNLEARNBreak a habit, in a way
UNLEARNKick a habit
UNLEARNBreak bad habits, in a way
UNLEARNChange, as a bad habit